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Grandfathered minerals
1,125 minerals
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Sapphirine | Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆] | Monoclinic | 7.5 | — |
| Sarcolite | Na₄Ca₁₂Al₈Si₁₂O₄₆(SiO₄,PO₄)(OH,H₂O)₄(CO₃,Cl) | Tetragonal | — | — |
| Sarcopside | (Fe²⁺,Mn²⁺,Mg)₃(PO₄)₂ | Monoclinic | — | — |
| Sarkinite | Mn²⁺₂(AsO₄)(OH) | Monoclinic | — | — |
| Sarmientite | Fe³⁺₂(AsO₄)(SO₄)(OH) * 5H₂O | — | — | — |
| Sartorite | PbAs₂S₄ | Monoclinic | 3.0 | — |
| Sassolite | B(OH)₃ | Triclinic | 1.0 | 1.65 g/cm³ |
| Sauconite | Na₀.₃Zn₃((Si,Al)₄O₁₀)(OH)₂ * 4H₂O | Monoclinic | — | — |
| Sborgite | Na[B₅O₆(OH)₄]·3H₂O | Monoclinic | — | — |
| Scacchite | MnCl₂ | Trigonal | — | 2.92 g/cm³ |
| Scarbroite | Al₅(CO₃)(OH)₁₃·5H₂O | Hexagonal | — | — |
| Scawtite | Ca₇(Si₃O₉)₂CO₃ * 2H₂O | Monoclinic | — | — |
| Schafarzikite | Fe²⁺Sb³⁺₂O₄ | Tetragonal | — | — |
| Schairerite | Na₂₁(SO₄)₇ClF₆ | Trigonal | — | — |
| Schallerite | Mn²⁺₁₆As₃Si₁₂O₃₆(OH)₁₇ | — | — | — |
| Scheelite | CaWO₄ | Tetragonal | — | 6.10 g/cm³ |
| Schertelite | (NH₄)₂MgH₂(PO₄)₂ * 4H₂O | — | — | — |
| Schmiederite | Cu₂Pb₂(Se⁴⁺O₃)(Se⁶⁺O₄)(OH)₄ | Monoclinic | — | — |
| Scholzite | CaZn₂(PO₄)₂ * 2H₂O | — | — | — |
| Schorlomite | — | Cubic | — | — |
| Schreibersite | (Fe,Ni,Cr)₃P | Tetragonal | — | — |
| Schröckingerite | NaCa₃(UO₂)(SO₄)(CO₃)₃F·10H₂O | Triclinic | 2.5 | — |
| Schultenite | Pb(AsO₃OH) | Monoclinic | — | — |
| Schwartzembergite | Pb²⁺₅H₂I³⁺O₆Cl₃ | Tetragonal | — | — |
| Scorodite | Fe³⁺AsO₄·2H₂O | Orthorhombic | — | — |
| Scorzalite | Fe²⁺Al₂(PO₄)₂(OH)₂ | Monoclinic | — | — |
| Seamanite | — | Orthorhombic | — | — |
| Searlesite | NaBSi₂O₅(OH)₂ | Monoclinic | — | — |
| Selenium | Se | Trigonal | — | — |
| Seligmannite | CuPbAsS₃ | Orthorhombic | — | 5.24 g/cm³ |
| Sellaite | MgF₂ | Tetragonal | — | 3.19 g/cm³ |
| Semseyite | Pb₉Sb₈S₂₁ | Monoclinic | 2.5 | — |
| Senaite | Pb(Mn,Y,U)(Fe,Zn)₂(Ti,Fe,Cr,V)₁₈(O,OH)₃₈ | — | — | — |
| Sepiolite | Mg₄Si₆O₁₅(OH)₂·6H₂O | Orthorhombic | 2.2 | — |
| Serendibite | Ca₄[Mg₆Al₆]O₄[Si₆B₃Al₃O₃₆] | Triclinic | — | — |
| Serpierite | Ca(Cu,Zn)₄(SO₄)₂(OH)₆·3H₂O | Monoclinic | — | — |
| Shandite | Ni₃Pb₂S₂ | Trigonal | 4.0 | 8.73 g/cm³ |
| Sharpite | — | Orthorhombic | — | — |
| Shcherbakovite | (K,Ba)KNa(Ti,Nb)₂(Si₄O₁₂)O₂ | — | — | — |
| Sherwoodite | Ca₄.₅AlV₁₄O₄₀·28H₂O | Tetragonal | — | — |
| Shortite | — | Orthorhombic | — | — |
| Sibirskite | Ca₂(HB₂O₅)(OH) | Monoclinic | — | — |
| Sideronatrite | — | Orthorhombic | — | — |
| Siegenite | CoNi₂S₄ | Cubic | — | — |
| Sillimanite | Al₂OSiO₄ | Orthorhombic | 7.0 | 3.68 g/cm³ |
| Sillénite | — | Cubic | — | — |
| Simonellite | C₁₉H₂₄ | Orthorhombic | — | — |
| Simplotite | CaV⁴⁺₄O₉·5H₂O | Monoclinic | — | — |
| Simpsonite | Al₄Ta₃O₁₃(OH) | Trigonal | 7.5 | — |
| Sincosite | Ca(VO)₂(PO₄)₂·4H₂O | — | — | — |
| Sinhalite | MgAlBO₄ | Orthorhombic | — | 3.35 g/cm³ |
| Sklodowskite | Mg(UO₂)₂(SiO₃OH)₂·6H₂O | Monoclinic | — | — |
| Skutterudite | CoAs₃ | Cubic | — | 6.84 g/cm³ |
| Smithite | AgAsS₂ | — | — | — |
| Smithsonite | ZnCO₃ | Trigonal | 5.0 | 4.46 g/cm³ |
| Smolyaninovite | Co₃Fe³⁺₂(AsO₄)₄ * 1₁H₂O | — | — | — |
| Smythite | (Fe,Ni)₃₊ₓS₄ (x = 0 to 0.3) | — | — | — |
| Sodalite | Na₄Si₃Al₃O₁₂Cl | Cubic | 6.0 | — |
| Soddyite | (UO₂)₂SiO₄·2H₂O | Orthorhombic | 3.5 | — |
| Souzalite | (Mg,Fe²⁺)₃(Al,Fe³⁺)₄(PO₄)₄(OH)₆ * 2H₂O | — | — | — |
| Spangolite | Cu₆AlSO₄(OH)₁₂Cl·3H₂O | Trigonal | — | — |
| Spencerite | Zn₄(PO₄)₂(OH)₂ * 3H₂O | — | — | — |
| Sperrylite | PtAs₂ | Cubic | — | 10.56 g/cm³ |
| Spessartine | Mn²⁺₃Al₂(SiO₄)₃ | Cubic | — | 4.19 g/cm³ |
| Spinel | MgAl₂O₄ | Cubic | 8.0 | 3.58 g/cm³ |
| Spurrite | Ca₅(SiO₄)₂(CO₃) | Monoclinic | 5.0 | — |
| Stannite | Cu₂FeSnS₄ | Tetragonal | 4.0 | — |
| Stannopalladinite | Pd₃Sn₂ | Hexagonal | — | — |
| Staurolite | Fe²⁺₂Al₉Si₄O₂₃(OH) | Monoclinic | — | — |
| Steigerite | Al(VO₄) * 3H₂O | — | — | — |
| Stephanite | Ag₅SbS₄ | Orthorhombic | — | — |
| Stercorite | — | Triclinic | — | — |
| Sternbergite | AgFe₂S₃ | — | — | — |
| Stewartite | Mn²⁺Fe³⁺₂(PO₄)₂(OH)₂ * 8H₂O | Triclinic | 3.0 | 2.94 g/cm³ |
| Stibiocolumbite | SbNbO₄ | Orthorhombic | — | 5.62 g/cm³ |
| Stibiotantalite | Sb³⁺TaO₄ | — | — | — |
| Stibnite | Sb₂S₃ | Orthorhombic | 8.0 | — |
| Stilleite | ZnSe | Cubic | 5.0 | 5.27 g/cm³ |
| Stokesite | CaSn[Si₃O₉] * 2H₂O | Orthorhombic | 6.0 | — |
| Stolzite | PbWO₄ | Tetragonal | — | 8.32 g/cm³ |