Properties of Matter

wardsci.com 800-962-2660 Quartz (variety Amethyst) Si O2 Crystallography: Hexagonal -R;32 (low quartz). Hexagonal; 622 (high quartz). Crystals not common. Usually massive, coarsely crystalline. Physical Properties: Cleavage: Generally none; occasi...

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+ward’ssciencewardsci.com800-962-2660 Quartz (variety Chert) Si O2 Crystallography: Hexagonal -R; 32 (low-quartz). Hexagonal; 622 (high quartz). Cryptocrystalline; massive granular. Physical Properties: Cleavage: Generally none; occasional indisti...

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wardsci.com 800-962-2660 Quartz (variety Smoky) Si O2 Crystallography: Hexagonal -R; 32 (low-quartz.) Hexagonal; 622 (high-quartz.) Crystals are commonly prismatic, with prism faces horizontally striated, and usually terminated by a positive and n...

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wardsci.com 800-962-2660 Quartz (variety Rose) Si O2 Crystallography: Hexagonal -R; 32 (low quartz). Hexagonal; 622 (high quartz). Crystals not common. Usually massive, coarsely crystalline. Physical Properties: Cleavage: Generally none; occasiona...

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wardsci.com 800-962-2660 Chromite Fe+2 Cr2 O4 (Spinel Group) Crystallography: Isometric; 4/m32/m. Habit octahedral but crystals small and rare; most often granular to compact; massive. Physical Properties: Cleavage: None. Fracture uneven; brittle....

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Andradite Ca3Fe2+3 (SiO4)3 (Garnet Group) Crystallography: Isometric; 4/m32/m. Common forms are dodecahedron and trapezohedron, often in combination. Also massive, granular. Physical Properties: Cleavage: None; parting sometimes distinct. Fracture...

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+ward’ssciencewardsci.com800-962-2660 Halite NaCl Crystallography: Isometric; 4/m32/m. Cubic habit; other forms very rare. Also massive, granular to compact. Physical Properties: Cleavage: {001} perfect. Fracture conchoidal; rather brittle. Hardne...

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+ward’ssciencewardsci.com800-962-2660 Apatite Ca5(PO4)3(F,Cl,OH) Crystallography: Hexagonal; 6/m. Commonly occurs in crystals of long prismatic habit; also in mas- sive to compact masses. Physical Properties: Cleavage: {0001} poor. Fracture concho...

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wardsci.com 800-962-2660 Slate Type: Metamorphic; regional. Texture/Appearance: Fine-grained; lacks mineral segregation banding, displays rock cleavage in one direction. Surface may appear somewhat smooth and shiny. Color: Various, including dark ...

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wardsci.com 800-962-2660 Limonite FeO • OH • nH2O Crystallography: Not crystallized, a mineral colloid. Usually stalactitic, botryoidal, or mammillary; also fibrous, massive, earthy. Physical Properties: Cleavage: None apparent. Hardness: 5.0-5.5....

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+ward’ssciencewardsci.com800-962-2660 Dolomite CaMg (CO₃)₂ Crystallography: Hexagonal-R; 3. Crystals usually unit rhombohedron, or a steep rhombohedron and base; faces often curved. Twinning common. Also coarse, granular, cleavable masses to fine-...

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ward’s sciencewardsci.com800-962-2660 Hematite Fe2 O Crystallography: Hexagonal -R; 32/m. Crystals thick to thin tabular on {0001}; more rarely rhombohe- dral. Also micaceous to platy, botryoidal to reniform, and commonly earthy. Physical Properti...

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+ward’ssciencewardsci.com800-962-2660 Beryl Be3 Al2 Si6 O18 Crystallography: Hexagonal; 6/m2/m2/m. Strong prismatic habit; frequently vertically striated and grooved. Forms usually present consist only of {1010} and {0001}. Physical Properties: Cl...

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+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 ...

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+ward’ssciencewardsci.com800-962-2660 Copper Cu Crystallography: Isometric; 4/m32/m. Tetrahexahedron faces are common, as are the cube, dodecahedron, and octahedron. Crystals usually malformed and branching; also irregular masses and wire-like for...

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+ward’ssciencewardsci.com800-962-2660 Sulfur S Crystallography: Orthorhombic; 2/m2/m2/m. Crystals commonly dipyramidal; thick tabular on {001.} Also massive, in spherical or reniform shapes, incrusting, earthy. Physical Properties: Cleavage: None....

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