"gel box"

Shiny crystal clusters and crystalline groups, this 'fools gold' is brassy and leaves a black streak.

Pure, white, earthy “China clay”.

Cleaned, pure, bright, metallic native copper.

Feldspar group; white-to-gray cleavages of sodic plagioclase; some show twinning.

Spinel group; black, dull metallic luster; common iron oxide.

White, massive, coarse crystalline vein, Mohs’ hardness of 7.

White, fibrous, silky luster.

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

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

Bright metallic cubic cleavages; lead ore.