"WardsSci000478"

Massive sedimentary gypsum with a moh's hardness 2..

White to gray, medium to coarse-grained, crystalline.

Sale

Large, black, rounded tektite, 1 1/2". Thailand.

This coloful mix of naturally colored polished stones are available in a variety of tumbled sizes. 1 lb. package.

Teach students how to identify minerals with this collection.

Choice yellow-brown, globular to botryoidal crystal groups of this lead arsenate mineral. A secondary mineral in lead deposits forming a series with pyromorphite and vanadinite. Average size: 1" x 1" to 1 1/2" x 1 1/2". Mexico.

Own a carbonaceous chondrite!