There are 165 minerals that start with the letter R. From Rabdesite to Rzhischevite. Minerals are naturally occurring, inorganic solids with a defined chemical composition and a crystalline structure. They are the building blocks of rocks and are classified based on their chemical properties, crystal structure, and texture. Minerals form through a variety of geological processes, including crystallization from molten rock, precipitation from solutions, and metamorphism under high pressure and temperature. They are essential not only for geological processes but also for many industrial applications and are critical for life, serving as nutrients in biological systems.
An intriguing fact about minerals is that some larval insects use mineral particles from the environment to enhance their camouflage, adapting to their surroundings for protection against predators. This innovative use of minerals demonstrates the complex interactions between organisms and their natural habitats.
Here’s what each of the columns in the table means:
Column Name: This column indicates the specific chemical elements or compounds that make up the mineral, defining its identity and properties.
Mohs hardness: This column provides a numerical scale from 1 to 10 that ranks the hardness of the mineral based on its ability to scratch or be scratched by other substances.
Common uses: This column outlines the various applications or industries where the mineral is utilized, highlighting its practical importance in everyday life and technology.
Description: This column includes a brief overview of the mineral’s appearance, characteristics, and unique features, providing essential information for identification and understanding its role in geology and industry.
Minerals That Start With R
| Minerals | chemical composition | Mohs hardness | common uses |
|---|---|---|---|
| Rabdesite | NaNaBa2(SO4)3�2H2O | 2.5-3(3.0) | Sulfate mineral |
| Rabejacite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | Uranium mineral |
| Raberite | Fe2+Fe3+2(AsO4)2(OH)4 | 4-5(4.5) | Arsenic mineral |
| Rabfeldspathite | Rachelfrite | Raguinite | Railstonite |
| Rabionoite | Ca(Sr,Ba)(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | Uranium mineral |
| Racemose | CaCO3 | 3(3.0) | Carbonate mineral |
| Rackleyite | MgCO3�3H2O | 2-3(2.5) | Carbonate mineral |
| Radian | Cu2+Cu2+2(AsO4)2(OH)2 | 3-4(3.5) | Arsenic mineral |
| Radiolite | Fe3+2O3 | 5-6(5.5) | Iron oxide mineral |
| Radonite | Na(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | Radioactive mineral, research |
| Radtkeite | Hg+Cl | 1-2(1.5) | Mercury mineral |
| Raeite | Na2Fe2+[SO4]2�4H2O | 2-3(2.5) | Sulfate mineral |
| Raghavaite | FeCr2O4 | 5.5-6.5(6.0) | Chromium mineral |
| Raguinite | Fe3+2(AsO4)(OH) | 4-5(4.5) | Arsenic mineral |
| Raimondiite | NaFe3+3(AsO4)2(OH)4 | 4-5(4.5) | Arsenic mineral |
| Raite | Na2ZrSi2O7 | 5.5-6.5(6.0) | unknown |
| Ralstonite | Na,Mg(F,OH)�2H2O | 3.5-4.5(4.0) | Fluoride mineral |
| Ramanite-(Yb) | (Yb,Tb,Gd)(UO2)2(VO4)2�6-8H2O | 3.0-4.0(3.5) | unknown |
| Rambergite | NiCl2�6H2O | 1.5-2(1.5) | Nickel mineral |
| Ramdohrite | Ag3CuS2 | 2-3(2.5) | None |
| Ramik | Ca2(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Ramloite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | None |
| Rammelsbergite | NiAs2 | 5.5-6(5.5) | Nickel mineral |
| Ramsayite | Na2TiSi2O7 | 5.0-6.0(5.5) | unknown |
| Ramsbeckite | Cu2+(UO2)2(VO4)�6-8H2O | 3.5-4.0(3.75) | Mineral specimen |
| Ramsdellite | MnO2 | 2.0-3.0(2.5) | unknown |
| Rana Emerald | Be3Al2(SiO3)6 | 7.5-8.0(7.8) | gemstone |
| Rancieite | Ca(Mn2+,Mn4+)4O9�3-4H2O | 3-4(3.5) | Manganese mineral |
| Randite | Ca(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Rangkasite | NaFe3+O2 | 5.0-6.0(5.5) | unknown |
| Rankamaite | Na4(UO2)(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Ransomite | CuCr2O4 | 5.5-6.5(6.0) | Chromium mineral |
| Ranunculite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | None |
| Rapidcreekite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | Radioactive mineral, research |
| Rapoldite | (Co,Ni)As | 5-6(5.5) | Cobalt mineral |
| Rapymrsite | (Ni,Co)As�2H2O | 5-6(5.5) | Cobalt mineral |
| Rareite | CaV3+2(AsO4)2�4-6H2O | 3-4(3.5) | Arsenic mineral |
| Raspite | PbWO4 | 5-5.5(5.0) | Tungsten mineral |
| Rassokhinite | NaBa2Cu5(AsO4)4Cl�5H2O | 3.5-4(3.5) | Arsenic mineral |
| Rasvumite | KFe2S3 | 3.5-4.5(4.0) | unknown |
| Rathite | Pb4FeSb6S14 | 3.0-4.0(3.5) | unknown |
| Rauchite | Na3Ca(UO2)2(VO4)2�6-8H2O | 3.0-3.5(3.25) | Mineral specimen |
| Raulandite | Fe3+2(AsO4)(OH) | 4-5(4.5) | Arsenic mineral |
| Raumanite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | Radioactive mineral, research |
| Raumite | Bi2(UO2)2(VO4)2�4-6H2O | 3-4(3.5) | Uranium mineral |
| Raunite | Ca(UO2)2(VO4)2�6-8H2O | 2.5-3.5(3.0) | unknown |
| Rauvite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | None |
| Ravatite | (Mg,Fe)SiO3 | 5-6(5.5) | None |
| Ravite | CaUO4�2H2O | 2-3(2.5) | None |
| Rawlinaite | Mn4+O2 | 5-6(5.5) | None |
| Rawsonite | Mg(UO2)2(VO4)2�6-8H2O | 2.5-3.5(3.0) | unknown |
| Raxite | Na2Mn4+6O12�3H2O | 4-5(4.5) | Manganese mineral |
| Raxoelite | CaY(CO3)2�6H2O | 2.5-3.0(2.75) | Mineral specimen |
| Rayite | KCr(AsO4)(OH) | 4-5(4.5) | Chromium mineral |
| Razoumovskite | (UO2)3(VO4)2�5-8H2O | 3-4(3.5) | Uranium mineral |
| Realgar | As4S4 | 1.5-2(1.75) | Pigment, fireworks |
| Rebulite | (Mg,Fe2+)2+(Mg,Fe2+,Mn2+)3(AsO4)2(OH)4 | 5.0-5.5(5.25) | Mineral specimen |
| Red Beryl | Be3Al2(SiO3)6 | 7.5-8.0(7.8) | gemstone |
| Red Mercury | HgS | 2.0-2.5(2.3) | unknown |
| Red Vanadinite | Pb5(VO4)3Cl | 2.0-3.0(2.5) | pigment, gemstone |
| Redfieldite | Ca(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Redgillite | Mn2+Fe3+2(AsO4)2(OH)2�6H2O | 4-5(4.5) | Arsenic mineral |
| Redingtonite | NaCr(SO4)2(OH)�6H2O | 3-4(3.5) | Chromium mineral |
| Reedmergnerite | NaBSi3O8 | 6.0-7.0(6.5) | unknown |
| Reevesite | Ni6Fe3+2(OH)16CO3 | 2.0-3.0(2.5) | unknown |
| Refikite | Pb3UO6 | 4-5(4.5) | None |
| Refranellite | Fe3+(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Refulgerite | CuSbO4(OH) | 3-4(3.5) | gemstone |
| Reichenbachite | (Mg,Fe)2V2O7�4H2O | 3-4(3.5) | pigment |
| Reiferite | KCr(SO4)2�12H2O | 2-3(2.5) | pigment, dye |
| Reinerite | Zn3(AsO4)2�2-4H2O | 3-4(3.5) | None |
| Rejelkaite | Hg4Cl3(OH) | 2.0-3.0(2.5) | unknown |
| Rembertiite | CaUO4�2-3H2O | 2-3(2.5) | None |
| Remondite-(Ce) | (Ce,La,Nd)3(Ti,Nb)5O16 | 5.0-6.0(5.5) | unknown |
| Renanite | Cu6TeO3Cl4 | 2.5-3.5(3.0) | unknown |
| Renardite | Pb5V4O17 | 3-4(3.5) | ores |
| Renierite | (Cu,Ge,Fe)8S8 | 4-5(4.5) | None |
| Reoclavite | Pb2+CuO2(OH) | 3-4(3.5) | None |
| Retzian-(Ce) | (Ce,La)2FeSi2O7(OH) | 5-6(5.5) | Cerium mineral |
| Retzian-(La) | (La,Ce)2FeSi2O7(OH) | 5-6(5.5) | Lanthanum mineral |
| Retzian-(Nd) | (Nd,Ce)2FeSi2O7(OH) | 5-6(5.5) | Neodymium mineral |
| Retzian-(Y) | (Y,Ce)2FeSi2O7(OH) | 5-6(5.5) | Yttrium mineral |
| Reussite | NaCaUO2(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Reynoldsite | Ca(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Rhabdophane-(Ce) | (Ce,La,Nd)PO4�H2O | 3-4(3.5) | ores |
| Rhabdophane-(La) | (La,Ce,Nd)PO4�H2O | 3-4(3.5) | ores |
| Rhabdophane-(Nd) | (Nd,La,Ce)PO4�H2O | 3-4(3.5) | ores |
| Rhabdophane-(Y) | (Y,Nd,Ce)PO4�H2O | 3.5-4.5(4.0) | unknown |
| Rhabdophyllite | CaMg(CO3)2 | 3-4(3.5) | ores |
| Rhagadiolithite | CaMgAl10O17 | 7.0-8.0(7.5) | unknown |
| Rhamnasite | Ca(UO2)2V2O8�6-8H2O | 2-3(2.5) | None |
| Rhenaite | WO2 | 5.0-6.0(5.5) | unknown |
| Rheniite | ReS2 | 6-7(6.5) | catalyst |
| Rhodanite | MnSiO3 | 5-6(5.5) | Gemstone, ornamental stone |
| Rhodarsenide | (Co,Ni)As | 5-6(5.5) | Cobalt mineral |
| Rhodesiite | (V,Ti,Fe)3O5 | 5-6(5.5) | ores |
| Rhodessite | (Mg,Ni)6Si4O10(OH)8 | 2.5-3.0(2.75) | Mineral specimen |
| Rhodizite | CsAl4Be4B4O16 | 8.0-9.0(8.5) | unknown |
| Rhodochrosite | MnCO3 | 3.5-4.5(4.0) | Manganese mineral |
| Rhodocrocoite | MnCO3 | 3.5-4(3.8) | Pigments, gemstones |
| Rhodocrosite | MnCO3 | 3.5-4.5(4.0) | pigment, gemstone |
| Rhodolite | Mg3Al2(SiO4)3 | 7-8(7.5) | Gemstone |
| Rhodonite | MnSiO3 | 5.5-6.5(6.0) | Manganese mineral |
| Rhodoplumsite | Pb(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | Uranium mineral |
| Rhodothroite | Mg3(UO2)2(VO4)2�8-10H2O | 3-4(3.5) | Uranium mineral |
| Rhodplumsite | Pb3(AsO4)2 | 3.5-4.5(4.0) | ores |
| Rhodstannite | Cu4FeGe2S8 | 4-5(4.5) | ores |
| Rhomboclase | Fe(UO2)2(VO4)2�6-8H2O | 2.0-3.0(2.5) | unknown |
| Rhombohedral Pyrrhotite | Fe1-xS | 3.5-4.0(3.75) | Mineral specimen |
| Rhrenbeckite | NaCa2(Fe,Mg)5Si8O22(OH)2 | 5-6(5.5) | construction |
| Rhutenite | RuO2 | 6.5-7.5(7.0) | unknown |
| Ribbonite | (Mg,Fe)5(AsO4)2(OH)4 | 3-4(3.5) | ores |
| Richellite | KAl(SO4)2�12H2O | 2-3(2.5) | fertilizer |
| Richtarite | Na(CaNa)Mg5Si8O22(OH)2 | 5-6(5.5) | None |
| Richterite | Na(Ca,Mg)5(Si,Al)8O22(OH)2 | 5-6(5.5) | construction |
| Riciniite | Cu5(AsO4)2(OH)4 | 3.5-4.5(4.0) | ores |
| Rickardite | Cu4Te3 | 2.5-3(2.75) | None |
| Riebeckite | Na2(Fe,Mg)5Si8O22(OH)2 | 5-6(5.5) | construction |
| Riesenite | ZnSO4�6H2O | 2-3(2.5) | pigment, dye |
| Rilandite | (Co,Ni,Fe)2(AsO4)(OH) | 4.0-5.0(4.5) | unknown |
| Rimkorolgite | Ba(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | ores |
| Rinaldiite | Ca[UO2)2(VO4)2]�5-8H2O | 2-3(2.5) | ores |
| Ringwoodite | (Mg,Fe)2SiO4 | 7.5-8(7.5) | research |
| Rinkite | Na2Ca4(Ti,Nb)(Si2O7)2O2F | 5.0-6.0(5.5) | unknown |
| Rinneite | K3FeCl6 | 2.0-2.5(2.25) | Mineral specimen |
| Ripidolite | (Mg,Fe)3(Si,Al)4O10(OH)8 | 2-3(2.5) | ceramics |
| Rittingerite | ZnUO2VO4�6-8H2O | 2.5-3.5(3.0) | unknown |
| Riversideite | Ca3Si2O7(OH)2 | 5-6(5.5) | construction |
| Roaldite | (Fe,Ni)9S8 | 3.5-4(3.8) | None |
| Robertsite | Ca(UO2)2(VO4)2�6-8H2O | 2.5-3.5(3.0) | unknown |
| Robinsonite | Pb4(SO4)(CO3)2Cl2 | 3-4(3.5) | ores |
| Rockbridgeite | (Fe,Mn)2+Fe3+4(PO4)3(OH)5 | 5-6(5.5) | None |
| Rodalquilarite | Cu3(UO2)8(VO4)6�12-14H2O | 3-4(3.5) | ores |
| Roeblingite | Ca6Zn3(SiO4)3(OH)6 | 5-6(5.5) | ores |
| Roesslerite | MgAsO4�7-8H2O | 2-3(2.5) | None |
| Rohaite | Ca2CuAl2(Al2Si2O10)(OH)4 | 4-5(4.5) | ores |
| Romeite | (Ca,Na)2(Nb,Ti)2O6(OH,F) | 5.0-6.0(5.5) | unknown |
| Romerite | Fe2+Fe3+2(SO4)4�14H2O | 2-3(2.5) | pigment |
| Romeroite | Pb3Cu(MoO4)2(OH)2 | 3.0-4.0(3.5) | unknown |
| Rondorfite | Mg5(SiO4)2(OH) | 5.0-6.0(5.5) | unknown |
| Roscoelite | K(V,Al,Mg)2(AlSi3,Si4)O10(OH)2 | 2-3(2.5) | pigment |
| Rosenbergite | CuCO3(OH) | 3-4(3.5) | ores |
| Rosenbuschite | Na3Ca2(Ti,Nb)O6(F,OH) | 5-6(5.5) | ores |
| Rosiaite | PbSb2O6 | 5.5-6(5.8) | None |
| Rossianite | PbFe3+O2(OH) | 4-5(4.5) | ores |
| Rossite | CaV2O6�3-4H2O | 2-3(2.5) | ores |
| Rouaite | NiCr2O4 | 7-8(7.5) | pigment |
| Roubaultite | (Cu,Zn)6(UO2)2(VO4)2(OH)4�8H2O | 2-3(2.5) | None |
| Roweite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | ores |
| Rowlandite-(Y) | (Y,REE)4(SiO4)3(OH) | 5-6(5.5) | gemstone |
| Rubicline | (Ca,Na)Al2Si2O8 | 6-7(6.5) | construction |
| Rubinite | Cu4+xO4 | 4-5(4.5) | None |
| Rucklidgeite | (Bi,Pb)4Te3 | 2-3(2.5) | ores |
| Rudashevskyite | (NH4,K)(Fe3+,Fe2+)3(SO4)2(OH,Cl)6 | 2-3(2.5) | ores |
| Ruffordite | Mn2+Mn3+2O4 | 5-6(5.5) | ores |
| Ruizite | CaV2O6 | 5-6(5.5) | None |
| Runcinite | Pb3Fe(CrO4)2(OH)4 | 3-4(3.5) | None |
| Runnite | Pb2CuCO3(OH)4 | 3-4(3.5) | ores |
| Rusakovite | Cu3+xV2O8�nH2O | 4-5(4.5) | None |
| Rusinovite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | None |
| Ruthenarsenite | (Ru,Os)AsS | 6-7(6.5) | None |
| Rutherfordine | UO2CO3 | 2-3(2.5) | ores |
| Rutile | TiO2 | 6-6.5(6.0) | pigment, abrasive |
| Rynersonite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | ores |
| Rzhischevite | (Co,Ni)AsS | 5-6(5.5) | ores |
Descriptions
Rabdesite
Rabdesite is a rare sulfate mineral that forms white to pale yellow prismatic crystals. It is found in evaporite deposits and is a source of sodium, barium, and sulfur.
Rabejacite
Rabejacite is a rare uranium vanadate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of uranium.
Raberite
Raberite is a rare iron arsenic oxide mineral that forms green to brown prismatic crystals. It is found in oxidized arsenic-bearing ore deposits and is a source of iron and arsenic.
Rabfeldspathite
Ramanite-(Ce)
Rabionoite
Rabionoite is a rare uranium vanadate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of uranium.
Racemose
Racemose is a rare calcium carbonate mineral that forms white to pale gray stalactitic or botryoidal aggregates. It is found in caves and other low-temperature environments.
Rackleyite
Rackleyite is a rare magnesium carbonate mineral that forms white to pale gray fibrous or stalactitic aggregates. It is found in evaporite deposits and is a source of magnesium.
Radian
Radian is a rare copper arsenic oxide mineral that forms blue to green prismatic crystals. It is found in oxidized copper-arsenic ore deposits and is a source of copper and arsenic.
Radiolite
Radiolite is a rare iron oxide mineral that forms red to brown octahedral crystals. It is found in metamorphic and igneous rocks and is a source of iron.
Radonite
A rare uranium vanadate mineral that forms yellow to greenish-yellow crystals or massive forms. It is found in sandstone-hosted uranium deposits.
Radtkeite
Radtkeite is a rare mercury chloride mineral that forms white to pale gray cubic crystals. It is found in mercury ore deposits and is a source of mercury.
Raeite
Raeite is a rare sodium iron sulfate mineral that forms white to pale green prismatic crystals. It is found in evaporite deposits and is a source of sodium, iron, and sulfur.
Raghavaite
Raghavaite is a rare chromium iron oxide mineral that forms black octahedral crystals. It is found in chromium-bearing ultramafic rocks and is a source of chromium and iron.
Raguinite
Raguinite is a rare iron arsenic oxide hydroxide mineral that forms yellow to brown prismatic crystals. It is found in oxidized arsenic-bearing ore deposits and is a source of iron and arsenic.
Raimondiite
Raimondiite is a rare sodium iron arsenic oxide hydroxide mineral that forms yellow to brown prismatic crystals. It is found in oxidized arsenic-bearing ore deposits and is a source of sodium, iron, and arsenic.
Raite
A rare sodium zirconium silicate mineral that forms pale yellow to white prismatic crystals. It is found in pegmatites and high-temperature hydrothermal veins.
Ralstonite
Ralstonite is a rare sodium magnesium fluoride hydroxide hydrate mineral that forms white to pale gray cubic crystals. It is found in evaporite deposits and is a source of sodium, magnesium, and fluorine.
Ramanite-(Yb)
A rare uranium-bearing vanadate mineral that forms yellow to greenish-yellow crystals. It is found in pegmatites and granite-related hydrothermal veins.
Rambergite
Rambergite is a rare nickel chloride hexahydrate mineral that forms green to blue-green prismatic crystals. It is found in nickel-bearing ore deposits and is a source of nickel.
Ramdohrite
A rare silver-copper sulfide mineral found in hydrothermal veins and pegmatites. It forms silver-gray to black prismatic crystals or massive aggregates.
Ramik
Ramik is a rare calcium uranium vanadate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of uranium and vanadium.
Ramloite
A rare uranium-vanadium hydrous mineral that forms yellow to green prismatic crystals or massive aggregates. It is found in oxidized zones of uranium deposits.
Rammelsbergite
Rammelsbergite is a rare nickel arsenide mineral that forms silver-white to pale gray prismatic crystals. It is found in nickel-bearing ore deposits and is a source of nickel and arsenic.
Ramsayite
A rare sodium titanium silicate mineral that forms tabular to prismatic crystals. It is found in alkaline igneous rocks and pegmatites.
Ramsbeckite
A rare uranium vanadate mineral that typically forms yellow to green prismatic crystals.
Ramsdellite
A rare manganese oxide mineral that forms black, acicular crystals. It is a polymorph of pyrolusite and is found in manganese ore deposits.
Rana Emerald
A rare variety of emerald that is mined in Rana, Norway. It is known for its distinctive pale green to blue-green color and high clarity.
Rancieite
Rancieite is a rare calcium manganese oxide hydroxide hydrate mineral that forms dark brown to black nodular or massive aggregates. It is found in manganese ore deposits and is a source of manganese.
Randite
Randite is a rare calcium uranium vanadate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of uranium and vanadium.
Rangkasite
A rare sodium iron oxide mineral that forms black, tabular crystals. It is found in pegmatites and alkaline igneous rocks.
Rankamaite
Rankamaite is a rare sodium uranium vanadate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of uranium and vanadium.
Ransomite
Ransomite is a rare copper chromium oxide mineral that forms black octahedral crystals. It is found in chromium-bearing ultramafic rocks and is a source of copper and chromium.
Ranunculite
A rare uranium-vanadium hydrous mineral that forms yellow to green prismatic crystals or massive aggregates. It is found in oxidized zones of uranium deposits.
Rapidcreekite
A rare, hydrous uranium vanadate mineral that forms yellow to greenish-yellow crystals or crusts. It is found in sandstone-hosted uranium deposits.
Rapoldite
Rapoldite is a rare cobalt nickel arsenic mineral that forms silver-white to pale gray prismatic crystals. It is found in cobalt-bearing ore deposits and is a source of cobalt and nickel.
Rapymrsite
Rapymrsite is a rare nickel cobalt arsenate hydrate mineral that forms green to blue-green prismatic crystals. It is found in cobalt-bearing ore deposits and is a source of nickel and cobalt.
Rareite
Rareite is a rare calcium vanadium arsenic oxide hydrate mineral that forms green to yellowish-green prismatic crystals. It is found in oxidized arsenic-bearing ore deposits and is a source of calcium, vanadium, and arsenic.
Raspite
Raspite is a rare lead tungstate mineral that forms yellow to brown prismatic crystals. It is found in tungsten-bearing ore deposits and is a source of lead and tungsten.
Rassokhinite
Rassokhinite is a rare sodium barium copper arsenic oxide chloride hydrate mineral that forms blue to green prismatic crystals. It is found in oxidized arsenic-bearing ore deposits and is a source of sodium, barium, copper, and arsenic.
Rasvumite
A rare potassium iron sulfide mineral that forms bronze to brass-yellow, metallic crystals. It is found in hydrothermal ore deposits and metamorphic rocks.
Rathite
A rare lead iron antimony sulfide mineral that forms black to dark gray, metallic crystals. It is found in hydrothermal ore deposits and metamorphic rocks.
Rauchite
A rare uranium vanadate mineral that typically forms green to yellow tabular crystals.
Raulandite
Raulandite is a rare iron arsenic oxide hydroxide mineral that forms yellow to brown prismatic crystals. It is found in oxidized arsenic-bearing ore deposits and is a source of iron and arsenic.
Raumanite
A rare, hydrous uranium vanadate mineral that forms yellow to yellowish-green crystals or crusts. It is found in sandstone-hosted uranium deposits.
Raumite
Raumite is a rare bismuth uranium vanadate hydrate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of bismuth, uranium, and vanadium.
Raunite
A rare calcium uranium vanadate mineral that forms yellow to greenish-yellow crystals. It is found in granite pegmatites and high-temperature hydrothermal veins.
Rauvite
A rare uranium-vanadium hydrous mineral that forms yellow to green prismatic crystals or massive aggregates. It is found in oxidized zones of uranium deposits.
Ravatite
A rare pyroxene mineral that forms green to brown prismatic crystals. It is a magnesium-iron silicate with a structure similar to enstatite and ferrosilite.
Ravite
A rare uranyl oxide hydrate mineral that forms yellow to greenish-yellow tabular or prismatic crystals. It is a secondary uranium mineral that forms in oxidized uranium deposits.
Rawlinaite
A rare manganese oxide mineral that forms dark brown to black prismatic crystals. It is structurally related to pyrolusite but with a different crystal system.
Rawsonite
A rare magnesium uranium vanadate mineral that forms yellow to greenish-yellow crystals. It is found in granite pegmatites and high-temperature hydrothermal veins.
Raxite
Raxite is a rare sodium manganese oxide hydroxide hydrate mineral that forms dark brown to black prismatic crystals. It is found in manganese ore deposits and is a source of sodium and manganese.
Raxoelite
A rare calcium-yttrium carbonate mineral that typically forms white to pale blue prismatic crystals.
Rayite
Rayite is a rare potassium chromium arsenic oxide hydroxide mineral that forms green to yellow-green prismatic crystals. It is found in chromium-bearing ore deposits and is a source of potassium, chromium, and arsenic.
Razoumovskite
Razoumovskite is a rare uranium vanadate hydrate mineral that forms yellow to greenish-yellow prismatic crystals. It is found in oxidized uranium deposits and is a source of uranium and vanadium.
Realgar
A rare arsenic sulfide mineral that forms bright red to orange-red prismatic crystals or massive aggregates. It is used as a pigment and in fireworks.
Rebulite
A rare magnesium-iron arsenate mineral that typically forms blue to green prismatic crystals.
Red Beryl
A rare and highly valuable variety of beryl that is naturally red in color. It is found in only a few locations worldwide, including the Wah Wah Mountains in Utah.
Red Mercury
A rare and controversial mercury sulfide mineral that is believed to have unique properties, though its existence and composition are still debated by scientists.
Red Vanadinite
A rare variety of vanadinite that is characterized by its deep red to reddish-orange color. It is prized as a gemstone and was historically used as a pigment.
Redfieldite
Redfieldite is a rare calcium uranium vanadate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of calcium, uranium, and vanadium.
Redgillite
Redgillite is a rare manganese iron arsenic oxide hydroxide hydrate mineral that forms green to yellow-green prismatic crystals. It is found in oxidized arsenic-bearing ore deposits and is a source of manganese, iron, and arsenic.
Redingtonite
Redingtonite is a rare sodium chromium sulfate hydroxide hexahydrate mineral that forms green to blue-green prismatic crystals. It is found in chromium-bearing ore deposits and is a source of sodium, chromium, and sulfur.
Reedmergnerite
A rare sodium borosilicate mineral that forms colorless to white, prismatic crystals. It is found in high-temperature, low-pressure metamorphic rocks and pegmatites.
Reevesite
A rare nickel iron hydroxyl carbonate mineral that forms green to bluish-green, platy crystals. It is found in weathered serpentinized ultramafic rocks.
Refikite
A rare uranyl oxide mineral that forms yellow to yellow-green prismatic crystals. It is a secondary uranium mineral that forms in oxidized uranium deposits.
Refranellite
Refranellite is a rare iron uranium vanadate hydrate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of iron, uranium, and vanadium.
Refulgerite
A rare copper antimony oxide hydroxide mineral with a bright orange-red color and adamantine luster. Occurs as small crystals in oxidized copper deposits.
Reichenbachite
A magnesium iron vanadate hydrate mineral with a bright yellow-green color. Typically forms as crusts or powdery coatings on other minerals.
Reiferite
A potassium chromium sulfate dodecahydrate mineral with a bright green color. Used historically as a pigment and dye due to its vivid chromium content.
Reinerite
A rare zinc arsenate hydrous mineral that forms white to pale green prismatic crystals or massive aggregates. It is found in oxidized zones of zinc deposits.
Rejelkaite
A rare mercury chloride hydroxide mineral that forms yellow to reddish-brown, prismatic crystals. It is found in mercury ore deposits and oxidation zones.
Rembertiite
A rare uranyl oxide hydrate mineral that forms yellow to greenish-yellow tabular or prismatic crystals. It is a secondary uranium mineral that forms in oxidized uranium deposits.
Remondite-(Ce)
A rare cerium-bearing titanium niobate mineral that forms pale yellow to white, prismatic crystals. It is found in pegmatites and alkaline igneous rocks.
Renanite
A rare copper tellurium chloride mineral that forms blue to green, tabular crystals. It is found in the oxidation zones of copper-tellurium deposits.
Renardite
A lead vanadate mineral with a pale yellow-green to green color. Occurs as tabular crystals or massive forms in oxidized lead-vanadium deposits.
Renierite
A rare copper-germanium-iron sulfide mineral that forms metallic gray to bronze prismatic crystals or massive aggregates. It is found in hydrothermal veins and volcanic rocks.
Reoclavite
A rare lead-copper hydroxide mineral that forms green to blue prismatic crystals or massive aggregates. It is found in oxidized zones of lead-copper deposits.
Retzian-(Ce)
Retzian-(Ce) is a rare cerium lanthanum iron silicate hydroxide mineral that forms yellow to brown prismatic crystals. It is found in rare earth-bearing ore deposits and is a source of cerium and lanthanum.
Retzian-(La)
Retzian-(La) is a rare lanthanum cerium iron silicate hydroxide mineral that forms yellow to brown prismatic crystals. It is found in rare earth-bearing ore deposits and is a source of lanthanum and cerium.
Retzian-(Nd)
Retzian-(Nd) is a rare neodymium cerium iron silicate hydroxide mineral that forms yellow to brown prismatic crystals. It is found in rare earth-bearing ore deposits and is a source of neodymium and cerium.
Retzian-(Y)
Retzian-(Y) is a rare yttrium cerium iron silicate hydroxide mineral that forms yellow to brown prismatic crystals. It is found in rare earth-bearing ore deposits and is a source of yttrium and cerium.
Reussite
Reussite is a rare sodium calcium uranium vanadate hydrate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of sodium, calcium, uranium, and vanadium.
Reynoldsite
Reynoldsite is a rare calcium uranium vanadate hydrate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of calcium, uranium, and vanadium.
Rhabdophane-(Ce)
A cerium-lanthanum-neodymium phosphate hydrate mineral that typically occurs as radiating groups of needle-like crystals or massive forms with a pale yellow to white color.
Rhabdophane-(La)
A lanthanum-cerium-neodymium phosphate hydrate mineral that forms similar radiating groups of needle-like crystals or massive forms, often with a pale yellow or white color.
Rhabdophane-(Nd)
A neodymium-lanthanum-cerium phosphate hydrate mineral that occurs as radiating groups of needle-like crystals or massive forms, typically with a pale pink to white color.
Rhabdophane-(Y)
A rare yttrium phosphate mineral that forms pale yellow to white, fibrous to earthy aggregates. It is found in pegmatites, granites, and hydrothermal veins.
Rhabdophyllite
A calcium magnesium carbonate mineral that forms thin, flexible, leaf-like crystals or compact masses with a pearly to silky luster. Often found in hydrothermal vein deposits.
Rhagadiolithite
A rare calcium magnesium aluminum oxide mineral that forms colorless to white, prismatic crystals. It is found in high-temperature, low-pressure metamorphic rocks.
Rhamnasite
A rare uranium-vanadium hydrous mineral that forms yellow to green prismatic crystals or massive aggregates. It is found in oxidized zones of uranium deposits.
Rhenaite
A rare tungsten oxide mineral that forms gray to black, metallic crystals. It is found in high-temperature hydrothermal veins and pegmatites.
Rheniite
A rare rhenium disulfide mineral that crystallizes in the trigonal system. It is the primary ore of the rare metal rhenium, which has applications in high-temperature alloys and catalysts.
Rhodanite
A rare manganese silicate mineral that forms pink to red prismatic crystals or massive aggregates. It is used as a gemstone and ornamental stone.
Rhodarsenide
Rhodarsenide is a rare cobalt nickel arsenic mineral that forms silver-white to pale gray prismatic crystals. It is found in cobalt-bearing ore deposits and is a source of cobalt and nickel.
Rhodesiite
A vanadium-titanium-iron oxide mineral that occurs as small, tabular crystals or granular masses. It is a source of vanadium and titanium, found in metamorphic and hydrothermal deposits.
Rhodessite
A rare magnesium-nickel silicate mineral that typically forms green to blue-green fibrous masses.
Rhodizite
A rare cesium aluminum beryllium borate mineral that forms colorless to pale yellow, cubic crystals. It is found in highly specialized pegmatites.
Rhodochrosite
Rhodochrosite is a common manganese carbonate mineral that forms pink to red rhombohedral crystals. It is found in manganese ore deposits and is a source of manganese.
Rhodocrocoite
A manganese carbonate mineral that forms red to pink prismatic or tabular crystals. It is the manganese analog of calcite and is used as a decorative stone and pigment.
Rhodocrosite
A common manganese carbonate mineral that forms pink to reddish-pink, rhombohedral crystals. It is used as a gemstone and pigment, and also found in manganese ore deposits.
Rhodolite
Rhodolite is a rare variety of garnet that forms reddish-purple to pink dodecahedral crystals. It is a gemstone used in jewelry and is a source of magnesium, aluminum, and silicon.
Rhodonite
Rhodonite is a common manganese inosilicate mineral that forms pink to red-brown massive or granular aggregates. It is found in manganese ore deposits and is a source of manganese.
Rhodoplumsite
Rhodoplumsite is a rare lead uranium vanadate hydrate mineral that forms yellow to greenish-yellow tabular crystals. It is found in oxidized uranium deposits and is a source of lead, uranium, and vanadium.
Rhodothroite
Rhodothroite is a rare magnesium uranium vanadate hydrate mineral that forms yellow to greenish-yellow pris
Rhodplumsite
A lead arsenate mineral that crystallizes in the monoclinic system. It is an important ore of lead and arsenic, often found in oxidized lead-bearing deposits.
Rhodstannite
A copper-iron-germanium sulfide mineral with a metallic luster and bronze-yellow color. It is a source of copper, iron, and the rare element germanium.
Rhomboclase
A rare iron uranium vanadate mineral that forms bright yellow to greenish-yellow, tabular crystals. It is found in granite pegmatites and hydrothermal veins.
Rhombohedral Pyrrhotite
A rare iron sulfide mineral that forms hexagonal crystals, typically silver-gray to bronze in color.
Rhrenbeckite
A sodium-calcium-iron-magnesium silicate hydroxide mineral that forms blue-green to black amphibole crystals. It has applications in construction materials and as a minor ore of iron.
Rhutenite
A rare ruthenium oxide mineral that forms gray to black, metallic crystals. It is found in ultramafic and mafic igneous rocks and associated placer deposits.
Ribbonite
A magnesium-iron arsenic oxide hydroxide mineral that typically forms green to yellow-green prismatic crystals or massive forms. It is a minor ore of magnesium and arsenic.
Richellite
A potassium aluminum sulfate dodecahydrate mineral with a white to pale blue color. It has applications as a fertilizer and in the production of alum.
Richtarite
A rare sodium-calcium-magnesium amphibole mineral that forms gray to green prismatic crystals or massive aggregates. It is found in metamorphic and igneous rocks.
Richterite
A sodium-calcium-magnesium silicate hydroxide mineral that forms blue-green to brown prismatic amphibole crystals. It has uses in construction materials and as a minor ore of magnesium.
Riciniite
A copper arsenic oxide hydroxide mineral that typically forms blue to green prismatic crystals or crusts. It is a minor ore of copper and arsenic, found in oxidized copper deposits.
Rickardite
A rare copper telluride mineral that forms silver-gray to dark gray metallic crystals or massive aggregates. It is found in hydrothermal veins and volcanic rocks.
Riebeckite
A sodium-iron-magnesium silicate hydroxide mineral that forms blue-green to black prismatic amphibole crystals. It has applications in construction materials and as a minor iron ore.
Riesenite
A zinc sulfate hexahydrate mineral with a pale green to white color. It can be used as a pigment or dye, and is sometimes found in evaporite deposits.
Rilandite
A rare cobalt-nickel-iron arsenate hydroxide mineral that forms green to blue-green, prismatic crystals. It is found in the oxidation zones of cobalt-nickel deposits.
Rimkorolgite
A barium uranium vanadate hydrate mineral that forms yellow to green tabular crystals or massive forms. It is a minor ore of uranium and vanadium.
Rinaldiite
A calcium uranium vanadate hydrate mineral that crystallizes in the monoclinic system. It is a minor ore of uranium and vanadium, found in oxidized uranium deposits.
Ringwoodite
A rare high-pressure polymorph of the mineral forsterite that forms under extreme conditions in the Earth’s mantle. It is a focus of study in experimental petrology and planetary science.
Rinkite
A rare sodium calcium titanium niobium silicate mineral that forms yellow to brown, prismatic crystals. It is found in alkaline igneous rocks and pegmatites.
Rinneite
A rare potassium-iron chloride mineral that typically forms pale yellow to white cubic crystals.
Ripidolite
A magnesium-iron aluminosilicate hydroxide mineral that forms green to bluish-green chloritic and micaceous crystals. It has applications in the ceramic industry.
Rittingerite
A rare zinc uranium vanadate mineral that forms bright yellow to greenish-yellow, tabular crystals. It is found in granite pegmatites and high-temperature hydrothermal veins.
Riversideite
A calcium silicate hydroxide mineral that forms white to gray prismatic crystals or massive forms. It has potential uses in construction materials and cement production.
Roaldite
A rare iron and nickel sulfide mineral that forms metallic gray to black cubic or octahedral crystals. It is found in mafic and ultramafic igneous rocks.
Robertsite
A rare calcium uranium vanadate mineral that forms yellow to greenish-yellow, tabular crystals. It is found in granite pegmatites and high-temperature hydrothermal veins.
Robinsonite
A lead sulfate carbonate chloride mineral that typically forms yellow to green prismatic crystals or massive forms. It is a minor ore of lead, found in oxidized lead deposits.
Rockbridgeite
A rare iron and manganese phosphate mineral that forms brown to black prismatic or tabular crystals. It is found in oxidized phosphate deposits and metamorphic rocks.
Rodalquilarite
A copper uranium vanadate hydrate mineral that forms green to yellow-green prismatic crystals or crusts. It is a minor ore of copper, uranium, and vanadium.
Roeblingite
A calcium zinc silicate hydroxide mineral that forms pale green to white columnar or fibrous crystals. It is a minor ore of zinc, found in skarn and hydrothermal deposits.
Roesslerite
A rare magnesium arsenate hydrate mineral that forms colorless to white prismatic or tabular crystals. It is found in oxidized arsenic-bearing mineral deposits.
Rohaite
A calcium copper aluminum silicate hydroxide mineral that typically forms blue to green prismatic crystals or massive forms. It is a minor ore of copper and aluminum.
Romeite
A rare calcium sodium niobium titanium oxide hydroxide fluoride mineral that forms yellow to orange, cubic crystals. It is found in alkaline igneous rocks and pegmatites.
Romerite
A ferrous-ferric sulfate hydrate mineral with a pale green to yellowish-green color. It can be used as a pigment and is found in oxidized iron sulfide deposits.
Romeroite
A rare lead copper molybdate hydroxide mineral that forms bright green, tabular crystals. It is found in the oxidation zones of copper-molybdenum deposits.
Rondorfite
A rare magnesium silicate hydrox
Roscoelite
A potassium vanadium-aluminum silicate hydroxide mineral that forms green to greenish-brown micaceous flakes or scaly masses. It is a source of vanadium and can be used as a green pigment.
Rosenbergite
A copper carbonate hydroxide mineral that typically forms blue to green prismatic crystals or crusts. It is a minor ore of copper, found in oxidized copper deposits.
Rosenbuschite
A sodium-calcium titanium-niobium oxide fluoride hydroxide mineral that forms reddish-brown to black prismatic crystals. It is a minor ore of titanium and niobium.
Rosiaite
A rare lead and antimony oxide mineral that forms yellow to orange-red prismatic or tabular crystals. It is found in hydrothermal ore deposits.
Rossianite
A lead ferric oxide hydroxide mineral that typically forms yellow to brown prismatic crystals or massive aggregates. It is a minor ore of lead and iron.
Rossite
A calcium vanadate hydrate mineral that forms pale yellow to white tabular or prismatic crystals. It is a minor ore of calcium and vanadium.
Rouaite
A nickel chromium oxide mineral that forms black octahedral crystals or massive forms. It can be used as a green pigment and is a minor ore of nickel and chromium.
Roubaultite
A rare copper, zinc, uranyl, and vanadate mineral that forms yellow to greenish-yellow prismatic or tabular crystals. It is a secondary uranium mineral that forms in oxidized uranium deposits.
Roweite
A calcium uranium vanadate hydrate mineral that forms bright yellow to green tabular crystals or massive forms. It is a minor ore of uranium and vanadium.
Rowlandite-(Y)
A rare yttrium-rich rare earth element silicate hydroxide mineral that forms pale yellow to white prismatic crystals. It is sometimes used as a gemstone.
Rubicline
A calcium-sodium aluminosilicate mineral that forms pink to reddish-pink crystals. It has potential applications in the construction industry as a source of aluminum and calcium.
Rubinite
A rare copper oxide mineral that forms red to reddish-brown prismatic or tabular crystals. It is found in oxidized copper ore deposits.
Rucklidgeite
A bismuth-lead telluride mineral that forms metallic, silvery-gray to steel-gray masses or granular aggregates. It is a minor ore of bismuth and lead.
Rudashevskyite
An ammonium-potassium ferric-ferrous sulfate hydroxide chloride mineral that forms pale green to yellow prismatic crystals or crusts. It is a minor ore of iron and a source of ammonium.
Ruffordite
A manganese oxide mineral that forms black, metallic, prismatic crystals or massive forms. It is a minor ore of manganese, found in oxidized manganese deposits.
Ruizite
A rare calcium and vanadium oxide mineral that forms yellow to orange-yellow prismatic or tabular crystals. It is found in vanadium-enriched mineral deposits.
Runcinite
A rare lead, iron, and chromium hydroxyl chromate mineral that forms yellow to orange-yellow prismatic or tabular crystals. It is found in oxidized chromium-bearing mineral deposits.
Runnite
A lead copper carbonate hydroxide mineral that typically forms blue to green prismatic crystals or massive forms. It is a minor ore of lead and copper.
Rusakovite
A rare copper and vanadium oxide hydrate mineral that forms blue to blue-green prismatic or tabular crystals. It is found in oxidized copper-vanadium ore deposits.
Rusinovite
A rare uranyl vanadate mineral that forms yellow to greenish-yellow prismatic or tabular crystals. It is a secondary uranium mineral that forms in oxidized uranium deposits.
Ruthenarsenite
A rare ruthenium and arsenic sulfide mineral that forms gray to black metallic crystals. It is found in ultramafic igneous rocks and associated placer deposits.
Rutherfordine
A uranium carbonate mineral that forms pale yellow to greenish-yellow tabular or prismatic crystals. It is a minor ore of uranium, found in oxidized uranium deposits.
Rutile
The most common titanium oxide mineral, with a reddish-brown to black color and metallic to adamantine luster. It is an important source of titanium and is used in pigments, abrasives, and other industrial applications.
Rynersonite
A calcium uranium vanadate hydrate mineral that forms bright yellow to greenish-yellow tabular crystals or masses. It is a minor ore of uranium and vanadium.
Rzhischevite
A cobalt-nickel arsenide sulfide mineral that forms metallic, gray to silver-gray masses or granular
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