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Igneous Rocks
Description:
Fine to medium-grained with biotite.
Description:
Dark gray, with hornblende as the dominant mafic mineral.
Description:
Pink feldspar mineral with a moh's hardness 6.
Description:
Pyroxenite is ultramafic igneous rock made up of primarily pyroxene minerals.
Catalog Number:
(470346-970)
Description:
Volcanic glass with snowflakes embedded throughout.
Description:
Dark gray, composed mostly of pyroxene and olivine.
Description:
Dark gray with abundant gas pocket vesicles.
Catalog Number:
(470025-348)
Description:
Study the Formation of Different Igneous Rocks
Description:
Medium-grained with biotite.
Description:
Classic, very coarse-grained igneous texture.
Description:
Light gray, with flow structure.
Description:
Coarse, “salt and pepper”: dark pyroxene and light andesine.
Catalog Number:
(470106-756)
Description:
<i>Includes</i>: six each of obsidian, pumice, and basalt. Set of 18.<BR><BR>Common rocks and minerals for testing and identification studies are 2–3cm each.
Catalog Number:
(470026-142)
Description:
Banded volcanic glass.
Description:
Abundant small black phenocrysts in a gray to brown matrix.
Description:
Coarse-grained plagioclase and pyroxene with some olivine.
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