Elements | Sulphides | Halides | Oxides | Carbonates | Borates | Sulfates |   Phosphates | Silicates | Organic Compounds | Rocks & Meteorites    A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T |  U | V | W | X | Y | Z |   Sulfates 硫酸鹽   Name Formula Crystal System Hardness SG   Aluminite 鋁氧石/礬石 Al2(SO4)(OH)4.7H2O Monoclinic 1-2 1.7-1.8   Alunite 明礬石 KAl3(SO4)2(OH)6 Trigonal 3.5-4 2.8   Alunogen 毛礬石 Al2(SO4)3.17H2O Triclinic 1.5 1.8   Anhydrite 硬石膏 CaSO4 Orthorhombic 3-3.5 2.8-3   Anglesite 硫酸鉛礦/鉛礬 PbSO4 Orthorhombic 2.5-3 6.4   Antlerite 塊銅礬 Cu5(SO4)2(OH)6.3H2O Orthorhombic 3.5 3.9   Apjohnite 錳明礬 MnAl2(SO4)4.22H2O Monoclinic 1.5 1.9 Barite 重晶石 BaSO4 Orthorhombic 3.5 4.3-4.7   Betpakdalite 砷鉬鐵鈣礦 CaFe3+H28(MoO4)5(AsO4)2.8H2O Monoclinic 3 3   Beudantite 菱鋁礬/砷菱鉛礬 PbFe3+3(AsO4)(SO4)(OH)6 Trigonal 3.5-4.5 4   Bilinite 復鐵礬 Fe2+Fe3+(SO4)4.22H2O Monoclinic 2 1.9   Botryogen 赤鐵礬 MgFe3+(SO4)2(OH).7H2O Monoclinic 2-2.5 2.1 Brochantite 水膽礬 Cu4(SO4)(OH)6 Monoclinic 3.5-4 4   Caledonite 鉛綠礬 Cu2Pb5(SO4)3(CO3)(OH)6 Orthorhombic 2.5-3 5.6 Celestine 天青石 SrSO4 Orthorhombic 3-3.5 4 Chalcanthite 膽礬 CuSO4.5H2O Triclinic 2.5 2.3   Copiapite 葉綠礬 (Fe2+,Mg)Fe3+42(SO4)6(OH)2.20H2O Triclinic 2.5 2.1-2.2   Coquimbite 針綠礬 Fe3+2(SO4)3.9H2O Trigonal 2 2.1 Crocoite 鉻鉛礦/鉻酸鉛礦 PbCrO4 Monoclinic 3 6 Cyanotrichite 絨銅礬 Cu4Al2(SO4)(OH)12·2H2O Orthorhombic 3 2.74-2.95   Devilline 鈣銅礬 CaCu4(SO4)2(OH)6.2HO Monoclinic 2.5 3.1   Epsomite 瀉利鹽 MgSO4.7H2O Orthorhombic 2 1.7   Ettringite 礬石/鈣礬石 Ca6Al6(SO4)3(OH)12.26H2O Hexagonal 2.5 1.8   Ferrimolybdite 鐵鉬華 Fe2(MoO4)3.8H2O Orthorhombic 1-2 4.4   Fibroferrite 纖鐵礬 Fe3+(SO4)(OH).5H2O Orthorhombic 2.5 1.9   Görgeyite 硫酸鉀鈣礦 K2Ca5(SO4)6.H2O Monoclinic 3.5 3 Gypsum/Selenite 石膏 CaSO4.2H2O Monoclinic 1.5-2 2.3   Halotrichite 鐵明礬 FeAl2(SO4)4.22H2O Monoclinic 1.5-2 1.9-2.1   Hanksite 碳酸芒硝/碳鉀鈉礬 Na22K(SO4)9(CO3)2Cl Hexagonal 3.5 2.6   Jarosite 黃鉀鐵礬 KFe3+3(SO4)2(OH)6 Trigonal 2.5-3.5 2.9-3.3   Johannite 鈾銅礬 Cu(UO2)2(SO4)2(OH)2.8H2O Triclinic 2-2.5 3.3   Langite 藍銅礬 Cu4(SO4)(OH)6.2H2O Orthorhombic 2.5-3 3.3   Leadhillite 硫碳酸鉛礦 Pb4(SO4)(CO3)2(OH)2 Monoclinic 2.5-3 6.5   Linarite 青鉛礦 PbCu(SO4)(OH)2 Monoclinic 2.5 5.3-5.5   Melanterite 水緣礬 FeSO4.7H2O Monoclinic 2 1.9   Morenosite 碧礬 NiSO4.7H2O Orthorhombic 2-2.5 2   Natrojarosite 鈉鐵礬/鈉鐵石 NaFe3+3(SO4)2(OH)6 Trigonal 3 3.2   Polyhalite 雜滷石 KCa2Mg(SO4)4.2H2O Triclinic 3-3.5 2.8   Scheelite 白鎢礦/鈣鎢礦 CaWO4 Tetragonal 4.5-5 6.1   Serpierite 鋅銅礬 Ca(Ci,Zn)4(SO4)2(OH)6.3H2O Monoclinic 2.5 3.1   Stolzite 鎢鉛礦 PbWO4 Tetragonal 2.5-3 7.9-8.3 Sturmanite 鈣錳礬/鈣鐵硼礬 Ca6Fe3+2(SO4)2[B(OH4)],(OH)12.25H2O Trigonal 2.5 1.9   Tschermigite 銨明礬 (NH4)Al(SO4)2.12H2O Cubic 1.5 1.6 Wulfenite 鉬鉛礦 PbMoO4 Tetragonal 3 6.3-7   Zippeite 水鈾礬/硫酸鈾礦 K4(UO2)6(SO4)3(OH)10.4H2O Orthorhombic ------ 3.7   Reference: The Complete Encyclopedia of Minerals | Gemstones of the World | 岩石與礦物圖鑑

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