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Black, high grade, foliated, greasy feel.

Brown, earthy, massive; used for yellow pigment.

Light gray, compact, hard, opaque, microcrystalline silica mineral.

Clear, euhedral points and sections.

Gemmy, sherry-colored crystals and sections approximately 3/8– 1/2"

Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.

Deep purple crystal clusters.

Bright blue crystalline veins and coatings in a matrix of mixed copper ore.

Cut black mica cleavage sheets.

Bright metallic cubic cleavages; lead ore.