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  I 日月星水晶屋 Sun Moon Star Crystal House   Name Formula/Composition Crystal System Hardness SG Type   Igneous Rocks 火成岩       2.6-3.8 Rocks & Meteorites   Ilmenite 鈦鐵礦 FeTiO3 Trigonal 5-6 4.5-5 Oxides   Ilmenorutile 黑金紅石 (Ti,Nb,Fe)O2 Tetragonal 6-6.5 4.2 Oxides   Ilvaite 黑柱石 CaFe2+2Fe3+Si2O8(OH) Orthorhombic 5.5-6 4.1 Silicates   Inderite 多水硼鎂石 MgB3O3(OH)5.5H2O Monoclinic 2.5 1.8 Borates   Indicolite 藍色電氣石 KLi2Al(Al,Si)3O10(F,OH)2, Na(Li,Al)3Al6Si6O18(BO3)3(OH)4 Trigonal 7.5 3.06 Silicates   Inesite 紅硅鈣錳礦 Ca2Mn7Si10O28(OH)2.5H2O Triclinic 5.5 3 Silicates   Intermediate Igneous Rocks 中性火成岩         Rocks & Meteorites   Inyoite 板硼石 CaB3O3(OH)5.4H2O Monoclinic 2 1.9 Borates   Iodargyrite 碘銀礦 ß-Agl Hexagonal 1-1.5 5.7 Halides   Iolite/Cordierite 堇青石 Mg2Al4Si6O18 Orthorhombic 7-7.5 2.5 Silicates   Iron 鐵 Fe Cubic 4 7.9 Elements   Ivory 牙類 Ivory is dentine form the teeth or modified teeth of certain mammals Amorphous 2.5-4 ~1.3 Organic Reference: The Complete Encyclopedia of Minerals | Gemstones of the World | 岩石與礦物圖鑑

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