"Classroom Mineral Specimens"

Classic, white chalk, massive; from Cliffs of Dover, England.

Exemplary display of hexoctahedral crystal shape.

Pure kaolinite powder, 200 mesh.

Amazonite

Clear to yellow translucent.

Red, classic oolitic texture.

Small 1–1.5 mm crystal, octahedrans or cubes, Mohs” hardness of 10.

Brownish gray, translucent.

Pyroxene group; gray-green, coarse crystalline.

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

Classic “peacock” aluminum ore.

Black, Micaceous, glittery metallic.

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

Calcite is a translucent calcium carbonate mineral, mohs hardness 3.

Hornblende is a dark amphibole group mineral, perfect for teaching Bowen's reaction series.

Sale

Pyroxene group; dark green, pure cleaved fragments.