"Activités de comprehensive"

Shows porphyritic texture in a fine dark matrix abundant large feldspar phenocrysts. Hand specimen.

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Save Over $100 on This Complete Petrology Teaching Package!

Ideal for Beginning Earth Science Students

Unusual glassy tubes of fused sand produced by lightning strikes in desert sediments. Average size: 1.5"- 2".

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

Perfect for introductory lessons on metamorphic rocks.

A variety of colorful collections to introduce rocks, minerals and fossils.

Glossy green dunite (olivine) inclusion in non-genetically related basalt. Average size: 3" x 4".

Clearly preserved ripple marks in bedded sedimentary rock. Average slab size: 6 x 8".