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Brownish gray, kerogen-rich; commercial oil source.

Slaty cleavage; contains hematite.

Chlorite-mica with perfect slaty cleavage.

White, very dark green, and very dark red to light red granoblastic intergrowth of wollastonite, diopside, and andradite.

Deep red, hexagonal, 3/8". India.

Beautiful, blue, hexagonal, sapphire crystals. Average size: 3/8". Madagascar.

Sharp, brown, twinned, orthorhombic, ³/₈– ¹/₂".

Define and compare ways organisms have been preserved.

Cross section of a Pennsylvanian fusulinid in chert that shows random orientations of structural features, including the proloculus and chamber walls.

Individual fusulinids. Vial of ten.

Honeycomb coral.

Early straight-shelled nautiloids in a small matrix.

Common graptolite genus.

Freeze-Dried Preserved.

Freeze-dried sheep brain. Available in vacuum packs.

Everything you need to safetly collect and culture bacteria and fungi from your environment