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 |   N   Name Formula/Composition Crystal System Hardness SG Type   Nacrite 珍珠石 Al2Si2O5(OH)4 Monoclinic 1 2.6 Silicates   Nagyagite 葉碲礦 Pb5Au(Te,Sb)4S5-8 Tetragonal 1.5 7.5 Sulphides   Namansilite 硅鈉錳石 NaMn3+Si2O6 Monoclinic 6-7 3.6 Silicates   Natalyite 鉻釩輝石 Na(V3+,Cr)Si2O6 Monoclinic 6.5-7 3.55 Silicates   Natrojarosite 鈉鐵礬/鈉鐵石 NaFe3+3(SO4)2(OH)6 Trigonal 3 3.2 Sulfates Natrolite 鈉沸石 Na2Al2Si3O10.2H2O Orthorhombic 5-5.5 2.2 Silicates   Nchwaningite 水羥硅錳石 Mn2+2(SiO3)(OH)2.H2O Orthorhombic 5.5 3.19 Silicates   Nepheline 霞石 (K,Na)AlSiO4 Tetragonal 5.5-6 2.7 Silicates   Neptunite 柱星葉石 KNa2LiFe2Ti2Si9O22 Monoclinic 5-6 3.2 Silicates   Nickeline 紅砷鎳礦 NiAs Hexagonal 5-5.5 7.8 Sulphides   Nickel-skutterudite 鎳方鈷礦 NiAs3 Cubic 5.5-6 6.5 Sulphides   Nimite 鎳綠泥石 (Ni,Mg,Al)6(Si,Al)4O10(OH)8 Monoclinic 3 3.19-3.23 Silicates   Noseane 黝方石 Na8Al6Si6O24(SO4) Cubic 5-6 2.3 Silicates   Novácekite 水砷鎂鈾礦/砷鎂鈾雲母 Mg(UO2)2(AsO4).10H2O Tetragonal 2.5 3.7 Phosphates Reference: The Complete Encyclopedia of Minerals | Gemstones of the World | 岩石與礦物圖鑑

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