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Minerals
6,131 minerals
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Reidite | ZrSiO₄ | Tetragonal | — | 4.63 g/cm³ |
| Reinerite | Zn₃(As³⁺O₃)₂ | Orthorhombic | — | — |
| Reinhardbraunsite | Ca₅(SiO₄)₂(OH,F)₂ | Monoclinic | — | — |
| Relianceite-(K) | — | Monoclinic | — | — |
| Renardite | Pb(UO₂)₄(PO₄)₂(OH)₄·7H₂O | — | — | — |
| Rengeite | Sr₄Ti₄ZrO₈(Si₂O₇)₂ | Monoclinic | — | — |
| Renierite | (Cu¹⁺,Zn)₁₁Fe₄(Ge⁴⁺,As⁵⁺)₂S₁₆ | Tetragonal | — | — |
| Reppiaite | Mn²⁺₅(VO₄)₂(OH)₄ | — | — | — |
| Retgersite | NiSO₄ * 6H₂O | Tetragonal | — | — |
| Retzian-(Ce) | Mn²⁺₂Ce(AsO₄)(OH)₄ | Orthorhombic | — | — |
| Retzian-(La) | (Mn²⁺,Mg)₂(La,Ce,Nd)(AsO₄)(OH)₄ | — | — | — |
| Retzian-(Nd) | Mn²⁺₂(Nd,Ce,La)(AsO₄)(OH)₄ | — | — | — |
| Revdite | Na₁₆Si₁₆O₂₇(OH)₂₆ * 2₈H₂O | — | — | — |
| Rewitzerite | [K(H₂O)]Mn₂(Al₂Ti)(PO₄)₄[O(OH)](H₂O)₁₀·4H₂O | Monoclinic | — | — |
| Reyerite | Na₂Ca₁₄Al₂Si₂₂O₅₈(OH)₈·6H₂O | — | — | — |
| Reynoldsite | Pb₂Mn⁴⁺₂O₅(CrO₄) | Triclinic | — | — |
| Reznitskyite | — | Monoclinic | — | — |
| Rhabdoborite-(V) | Mg₁₂(V₅+,Mo₆+,W₆+)₁ * 5O₆{[BO₃]₆-x[(P,As)O₄]xF₂-x} (x < ₁) | Hexagonal | — | — |
| Rhabdoborite-(W) | Mg₁₂(W₆+,V₅+)₁ * 5O₆{[BO₃]₆–x[(P,As)O₄]xF₂–x} (x < ₁) | Hexagonal | — | — |
| Rhabdophane-(Ce) | CePO₄·H₂O | Trigonal | — | — |
| Rhabdophane-(La) | La(PO₄)·H₂O | Hexagonal | 3.5 | — |
| Rhabdophane-(Nd) | NdPO₄·H₂O | Hexagonal | — | — |
| Rhabdophane-(Y) | Y(PO₄)·H₂O | Hexagonal | — | — |
| Rheniite | ReS₂ | Triclinic | — | 7.11 g/cm³ |
| Rhenium (native) | Re | Hexagonal | — | — |
| Rhodarsenide | Rh₂As | Orthorhombic | — | — |
| Rhodesite | KHCa₂Si₈O₁₉·5H₂O | — | — | — |
| Rhodium (native) | (Rh, Pt) | Cubic | 3.5 | — |
| Rhodizite | KBe₄Al₄(B₁₁Be)O₂₈ | Cubic | — | — |
| Rhodochrosite | MnCO₃ | Trigonal | — | 3.74 g/cm³ |
| Rhodonite | CaMn₃Mn(Si₅O₁₅) | Triclinic | — | — |
| Rhodostannite | Cu₂FeSn₃S₈ | Tetragonal | — | — |
| Rhodplumsite | Rh₃Pb₂S₂ | Trigonal | — | 9.79 g/cm³ |
| Rhomboclase | (H₅O₂)Fe³⁺(SO₄)₂ * 2H₂O | Orthorhombic | — | — |
| Rhönite | — | Triclinic | — | — |
| Ribbeite | Mn²⁺₅(SiO₄)₂(OH)₂ | — | — | — |
| Richardsite | — | Tetragonal | — | — |
| Richardsollyite | TlPbAsS₃ | Monoclinic | — | — |
| Richellite | CaFe³⁺₂(PO₄)₂(OH,F)₂ | Tetragonal | — | — |
| Richelsdorfite | Ca₂Cu₅Sb(AsO₄)₄(OH)₆Cl * 6H₂O | Monoclinic | — | — |
| Richetite | (Fe³⁺,Mg)Pb ₈.₆(UO₂)₃₆O₃₆(OH)₂₄*₄₁H₂O | — | — | — |
| Richterite | Na(NaCa)Mg₅Si₈O₂₂(OH)₂ | Monoclinic | — | — |
| Rickardite | Cu₃₋ₓTe₂ | Orthorhombic | — | — |
| Rickturnerite | Pb₇O₄[Mg(OH)₄](OH)Cl₃ | Orthorhombic | — | — |
| Riebeckite | ☐Na₂(Fe²⁺₃Fe³⁺₂)Si₂O₂₂(OH)₂ | Monoclinic | 6.0 | — |
| Riesite | TiTiO₄ | Monoclinic | — | — |
| Rietveldite | Fe(UO₂)(SO₄)₂(H₂O)₅ | Orthorhombic | 2.0 | — |
| Rigrahamite | Na₂Ca₂Th₂(CO₃)₄(HCO₃)₂(OH)₄(H₂O)₇ | Monoclinic | — | — |
| Rilandite | Cr₆SiO₁₁·5H₂O (?) | — | — | — |
| Rimkorolgite | (Mg,Mn)₅(Ba,Sr,Ca)(PO₄)₄ * 8H₂O | — | — | — |
| Ringwoodite | SiMg₂O₄ | Cubic | — | 3.24 g/cm³ |
| Rinkite-(Ce) | (Ca₃REE)Na(NaCa)Ti(Si₂O₇)₂(OF)F₂ | Monoclinic | — | — |
| Rinkite-(Y) | Na₂Ca₄YTi(Si₂O₇)₂OF₃ | Monoclinic | — | — |
| Rinmanite | ZnSb⁵⁺(Fe³⁺₂Mg)O₇(OH) | Hexagonal | — | — |
| Rinneite | K³NaFe²⁺Cl₆ | — | 3.0 | 2.35 g/cm³ |
| Riomarinaite | Bi(SO₄)(OH) * H₂O | Monoclinic | — | — |
| Riotintoite | Al(SO₄)(OH)*₃H₂O | Triclinic | — | — |
| Rippite | K₂(Nb,Ti)₂(Si₄O₁₂)O(O,F) | Tetragonal | — | — |
| Rittmannite | (Mn²⁺,Ca)Mn²⁺(Fe²⁺,Mn²⁺,Mg)₂(Al,Fe³⁺)₂(PO₄)₄(OH)₂(H₂O)₈ | Monoclinic | — | — |
| Rivadavite | Na₆Mg[B₆O₇(OH)₆]₄ * 10H₂O | Monoclinic | — | — |
| Riversideite | Ca₅Si₆O₁₆(OH)₂·2H₂O | — | — | — |
| Roaldite | (Fe,Ni)₄N | Cubic | — | — |
| Robertsite | Ca₂Mn³⁺₃(PO₄)₃O₂(H₂O)₂·H₂O | Monoclinic | — | — |
| Robinsonite | Pb₄Sb₆S₁₃ | Monoclinic | — | — |
| Rockbridgeite | Fe²⁺Fe³⁺₄(PO₄)₃(OH)₅ | — | — | — |
| Rodalquilarite | Fe₂(TeO₂OH)₃(TeO₃)Cl | Triclinic | — | — |
| Rodolicoite | Fe³⁺PO₄ | Trigonal | — | — |
| Roeblingite | Ca₆Mn²⁺Pb₂(Si₃O₉)₂(SO₄)₂(OH)₂·4H₂O | Monoclinic | — | — |
| Roedderite | KNaMg₂(Mg₃Si₁₂)O₃₀ | Hexagonal | 6.5 | — |
| Rogermitchellite | Na₆Sr₁₂Ba₂Zr₁₃Si₃₉B₄O₁₂₃(OH)₆·20H₂O | Hexagonal | — | — |
| Roggianite | Ca₂Be(OH)₂Al₂Si₄O₁₃ * 2.₅H₂O | Tetragonal | — | — |
| Rohaite | (Tl,Pb,K)₂Cu₈.₇Sb₂S₄ | Orthorhombic | — | — |
| Rokühnite | — | Monoclinic | — | — |
| Rollandite | Cu₃(AsO₄)₂ * 4H₂O | Orthorhombic | — | — |
| Romanorlovite | K₈Cu₆Cl₁₇(OH)₃ | Tetragonal | — | — |
| Romanèchite | (Ba,H₂O)₂(Mn⁴⁺,Mn³⁺)₅O₁₀ | Monoclinic | — | — |
| Romarchite | SnO | Tetragonal | — | 6.29 g/cm³ |
| Rondorfite | Ca₈Mg(SiO₄)₄Cl₂ | Cubic | — | — |
| Rongibbsite | Pb₂(Si₄Al)O₁₁(OH) | Monoclinic | — | — |
| Ronneburgite | K₂MnV₄O₁₂ | Monoclinic | 3.0 | 2.66 g/cm³ |