"WardsSci000478"

Light pink, massive, crystalline, translucent.

Pure, bright yellow, Frasch sulfur.

Kaolin is a white clay mineral that has vast industrial uses

Bright metallic cubic cleavages; lead ore.

Hardened natural cement of calcium carbonate that binds other material such as gravel, sand, clay, and silt.

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

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

Specimens illustrate important stages of mineral formation.

Pure translucent to white, rhombic cleavages, Mohs’ hardness of 3.

Specimens to supplement the most widely-used college lab manual for physical geology.