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 |   日月星水晶屋 Sun Moon Star Crystal House  S 日月星水晶屋 Sun Moon Star Crystal House   Name Formula/Composition Crystal System Hardness SG Type   Safflorite 斜方砷鈷礦 (Co,Fe)As2 Orthorhombic 4.5-5 7.5 Sulphides   Sal ammoniac 鹵砂 NH4Cl Cubic 1-2 1.5 Halides   Samsonite 硫銻錳銀礦 Ag4MnSb2S6 Monoclinic 2.5 5.5 Sulphides   Sandstone 沙岩 石英、長石、粘土等     ~2.6 Rocks & Meteorites   Sanidine 透長石 KAlSi3O8 Monoclinic 6-6.5 2.6 Silicates   Saponite 皂石 (Ca,Na)0,3(Fe,Mg)3(Si,Al)4O10(OH)2.4H2O Monoclinic 1-2 2.1 Silicates Sapphire 藍寶石 Al2O3 Trigonal 9 3.95-4.03 Oxides   Sapphirine 碧石英/藍色石/假藍寶石 Mg2Al4SiO10 Monoclinic 7.5 3.5 Silicates   Sartorite 脆硫砷鉛礦 PbAs2S4 Monoclinic 3 5.1 Sulphides Scapolite 方柱石 Na4Al3Si9O24Cl to Ca4Al6Si6O24(CO3,SO4) Tetragonal 5.5-6 2.57-2.74 Silicates   Scheelite 白鎢礦/鈣鎢礦 CaWO4 Tetragonal 4.5-5 6.1 Sulfates Schorl 黑色電氣石 NaFe3Al6(BO3)3Si6O18(OH)4 Trigonal 7-7.5 3.3 Silicates Scolecite 鈣沸石 CaAl2Si3O10.3H2O Monoclinic 5 2.3 Silicates   Scorodite 臭蔥石 Fe3+(AsO4).2H2O Orthorhombic 3.5-4 3.3 Phosphates   Scorzalite 多鐵天藍石 FeAl2(PO4)2(OH)2 Monoclinic 6 3.3 Phosphates   Sedimentary Rocks 沉積岩         Rocks & Meteorites   Sekaninaite 鐵堇青石 (Fe,Mg)2Al3(AlSi5O18) Orthorhombic 7-7.5 2.8 Silicates Selenite/Gypsum 石膏 CaSO4.2H2O Monoclinic 1.5-2 2.3 Sulfates   Selenium 硒 Se Trigonal 2 4.8 Elements   Semseyite 單斜鉛銻礦 Pb9Sb8S21 Monoclinic 2.5 6.1 Sulphides   Senarmontite 方銻礦 Sb2O3 Cubic 2-2.5 5.2-5.8 Oxides   Sepiolite 海泡石 Mg4Si6O15(OH)2.6H2O Orthorhombic 2-2.5 2 Silicates   Sérandite 針錳鈉石 Mn2NaSi3O8(OH) Triclinic 4.5-5 2.9 Silicates Serpentinite 蛇紋岩 Component is layered structure containing Magnesium silicate mineral，Chemical composition as Mg6[Si4O10] (OH)8。       Rocks & Meteorites   Serpierite 鋅銅礬 Ca(Ci,Zn)4(SO4)2(OH)6.3H2O Monoclinic 2.5 3.1 Sulfates   Shell 貝殼 Mainly contain calcium carbonate plus some organic matter and water Amorphous 2.5-3.5   Organic   Siderite 菱鐵礦 FeCO3 Trigonal 4 4 Carbonates   Sillimanite 矽線石 Al2SiO5 Orthorhombic 6.5-7.5 3.3 Silicates   Siltstone 沙泥岩/粉砂岩 From hardening clay materials to form small granular particles of sedimentary rocks.       Rocks & Meteorites Silver 銀 Ag Cubic 2.4-3.0 10-12 Elements   Skarn 夕卡岩 Main composition is Wallastonite       Rocks & Meteorites   Skutterudite 方砷鈷礦 CoAs2-3 Cubic 5.5-6 6.8 Sulphides   Smithsonite 菱鋅礦 ZnCO3 Trigonal 4.5 4.4 Carbonates Smoky Quartz 煙晶 SiO2 Trigonal 7 2.65 Oxides Sodalite 方鈉石 Na8Al6Si6O24Cl2 Cubic 5.5-6 2.3 Silicates   Sperrylite 砷鉑礦 PtAs2 Cubic 6-7 10.8 Sulphides Spessartine 錳鋁榴石 Mn3Al2Si3O12 Cubic 7.25 4.12-4.2 Silicates   Sphaerocobaltite/Cobaltocalcite 菱鈷礦/鈷方解石 (Ca,Co)CO3 Trigonal 4 4.1 Carbonates   Sphalerite 閃鋅礦 ZnS Cubic 3.5-4 4.1 Sulphides Sphene/Titanite 榍石 CaTiOSiO4 Monoclinic 5-5.5 3.5 Silicates Spinel 尖晶石 MgAl2O4 Cubic 7.5-8 3.6 Oxides   Spodumene 鋰輝石 LiAlSi2O6 Monoclinic 6.5-7   Silicates   Stannite 黃錫礦 Cu2FeSnS4 Tetragonal 4 4.5 Sulphides Star Quartz/Hollandite Quartz 星星水晶 SiO2 Trigonal 7 2.65 Oxides Staurolite 十字石 Fe2Al9Si4O22(OH)2 Orthorhombic 7-7.5 3.7 Silicates   Stephanite 脆銀礦 Ag5SbS4 Orthorhombic 2-2.5 6.3 Sulphides   Sternbergite 硫鐵銀礦 Ag2FeS3 Orthorhombic 1-1.5 4.3 Sulphides   Stibarsen 砷銻礦 SbAs Trigonal 3-4 6.3 Elements   Stibiconite 黃銻華 Sb3+Sb5+2O6(OH) Cubic 3-6 4.1-5.8 Oxides   Stibiotantalite 銻鉭鐵礦 SbTaO4 Orthorhombic 5-5.5 7.5 Oxides Stibnite 輝銻礦 Sb2S3 Orthorhombic 2 4.6 Sulphides   Stichtite 碳鎂鉻石/碳酸鎂鉻礦 Mg6Cr2(CO3)(OH)16.4H2O Trigonal 1.5-2 2.2 Carbonates Stilbite 輝沸石 NaCa2Al5Si13O36.14H2O Monoclinic 3.5-4 2.2 Silicates   Stilpnomelane 黑硬綠泥石 K(Fe2+,Mg,Fe3+)8(Si,Al)12(O,OH)27 Monoclinic 3 2.8 Silicates   Stolzite 鎢鉛礦 PbWO4 Tetragonal 2.5-3 7.9-8.3 Sulfates   Strengite 紅磷鐵礦 Fe3+(PO4).2H2O Orthorhombic 3.5-4.5 2.8 Phosphates   Stromeyerite 硫銅銀礦 AgCuS Orthorhombic 2.5-3 6.3 Sulphides   Strontianite 菱鍶礦 SrCO3 Orthorhombic 3.5 3.8 Carbonates Strunzite 纖磷錳鐵礦 MnFe3+2(PO4)2(OH)2.6H2O Monoclinic ------ 2.5 Phosphates Sturmanite 鈣錳礬/鈣鐵硼礬 Ca6Fe3+2(SO4)2[B(OH4)],(OH)12.25H2O Trigonal 2.5 1.9 Sulfates   Sudoite 鋁綠泥石 Mg2(Al,Fe)3Si3AlO10(OH)8 Monoclinic 2.5-3.5 2.63-2.68 Silicates Sugilite 舒俱徠石 KNa2(Fe,Mn,Al)2Li3Si12O30 Hexagonal 6-6.5 2.7 Silicates Sulphur 自然硫 S Orthorhombic 1.5-2.5 2.1 Elements Super Seven/Melody's Stone SiO2 Trigonal 7 2.65 Oxides   Syenite 正長岩 Consist of little Plagioclase Feldspars and very little Quartz       Rocks & Meteorites   Sylvanite 針碲金銀礦 (Au,Ag)2Te4 Monoclinic 1.5-2 .2 Sulphides   Sylvite 鉀石鹽  KCl Cubic 2 2 Halides   Symplesite 砷鐵礦 Fe3(AsO4)2.8H2O Triclinic 2.5 3 Phosphates   Reference: The Complete Encyclopedia of Minerals | Gemstones of the World | 岩石與礦物圖鑑

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