"Avantor"

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

Sawn and lacquered slab showing thinly bedded truncated layers in a well-cemented sandstone. Large hand specimen.

Classic, dark; from the Columbia Plateau.

Lustrous, black 'hard coal'.

Black, soft; most widely mined.

Cemented glacial gravel.

Small, rounded pebbles and tightly cemented granules.

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

Beautifully polished and distinctive slabs or rare 2.3 billion year old fossil stromatolites. Well defined growth structures in matrix.

Cut and finished samples with fiberoptic samples.

Introduce your students to rocks formed from the cooling of magma and lava.

Introduce your students to rocks formed from deposition of sediment.

Introduce your students to rocks formed metamorphism of other rocks.

Coarse grained and abundant in plagioclase feldspar.

Volcanic glass with snowflakes embedded throughout.

Everything You Need to Organize Your Specimens