"Avantor"

Samples of Intrusive and Extrusive Igneous Rocks

Perfect for Introductory Lessons on Metamorphic Rocks.

Represents a Wide Range of Depositional Environments and Rock Textures

Silvery, paragranite and muscovite-rich with medium garnet crystals.

Fine, common limestone; massive, and will fizzle with HCl.

White and black bands of quartz, feldspar, and biotite; typical foliation.

An introductory rock set contains six samples from each of the three major rock types.

Includes: six each of conglomerate, sandstone and shale. Set of 18.

Common rocks and minerals for testing and identification studies are 2–3cm each.

Includes: six each of marble, slate, and quartzite. Set of 18.

Common rocks and minerals for testing and identification studies are 2–3cm each.

Includes: six each of obsidian, pumice, and basalt. Set of 18.

Common rocks and minerals for testing and identification studies are 2–3cm each.

Abundant small black phenocrysts in a gray to brown matrix.

Dark gray with abundant gas pocket vesicles.

Pale pink felsite, with small sanidine phenocrysts.

Red, medium, to coarse-grained iron oxide cement; shows hematite bands.

Light gray, fine small clasts.

Brownish black, intermediate stage between peat and bituminous coal.