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Unformatted text preview: Covalent bonding atoms/ions share electrons Van der Waals bonding weak chemical bond Metallic bonding only in metals Minerals solid, inorganic, naturally-occurring, internal structure, defined composition or one that varies between known endpoints. Characteristics/Physical properties Color Luster Streak Hardness Crystal Form Isomorph Polymorph Cleavage Fracture Specific gravity Other properties Composition most accurate way to identify mineral. Over 98% of earths crust composed of only 8 elements! Mineral groups are defined by composition Silicates silica tetrahedron [silicon-oxygen tetrahedron] Single chain Double chain Sheet Framework (3-d network) Ferromagnesian [single tetrahedron] Oxides Hydroxides Phosphates Sulfides Sulfates Halides Carbonates Native elements...
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- Fall '09