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wardsci.com 800-962-2660 Sphalerite (Zn,Fe) S Crystallography: Isometric; 43m. Crystals usually tetrahedral or dodecahedral and often distorted and complex; rough, curved faces common. Usually in cleavable masses, coarse to fine granular. Physical...

+ward’ssciencewardsci.com800-962-2660 Albite NaAlSi3O8 (An0-10) (Feldspar Group) (see also Plagioclase) Crystallography: Triclinic; 1. Crystals commonly tabular parallel to {010}; sometimes elongated on b. Twinning and striations common. Often as ...

+ward’ssciencewardsci.com800-962-2660 Calcite CaCO3 Crystallography: Hexagonal-R; 32/m. Crystals are extremely varied in habit and can be highly complex. Three important habits include: prismatic, rhombohedral, and scalenohedral. Twinning is also ...

+ward’ssciencewardsci.com800-962-2660 Augite (Ca,Na) (Mg,Fe,Al,Ti) (Si,Al)2 O6 (Pyroxene Group) Crystallography: Monoclinic; 2/m. Commonly prismatic crystals with rectangular cross-sections, or in granular crystalline masses. Physical Properties: ...

+ward’ssciencewardsci.com800-962-2660 Skarn Type: Metamorphic; contact. Texture/Appearance: Most often coarse-grained and granoblastic with no foliation. Massive structure with zones of mineral concentration. Color: Varies with mineralogy, but usu...