Échantillons

Good grade, brass-yellow copper ore, massive.

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

Feldspar group; pink cleavages showing perthitic texture, common potassium feldspar, Mohs’ hardness of 6.

Pyroxene group; gray-green, coarse crystalline.

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

Amazonite

Brownish gray, translucent.

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.