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Igneous+Rocks


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Rock Specimens

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Description:   Samples of Intrusive and Extrusive Igneous Rocks
Catalog Number: (470025-348)

Description:   Study the Formation of Different Igneous Rocks

Description:   Introduce your students to rocks formed from the cooling of magma and lava.
Catalog Number: (470106-756)

Description:   Igneous Rock Set of 18
Description:   Gray, fine, friable, with abundant small sanidine crystal fragments.
Description:   Glassy; most specimens float in water.
Description:   Shiny black volcanic glass showing conchoidal fracture and some spherulites.
Description:   Coarse-grained, with microcline, biotite and horblende phenocrysts.
Description:   Advanced study series of almost 100 specimens.
Description:   Rhyolite is a pale, pink felsic rock with lower density than most igneous rocks.
Description:   Pegmatite is igneous rock similar to granite but with larger crystals.
Description:   Porphyritic igneous rock containing biotite, feldspar, and hornblende.
Description:   Gray andesite with large, blocky hornblende phenocrysts.
Description:   Gabbro is Mafic igneous rock formed deep underground consisting of olivine and pyroxene.
Description:   Pink feldspar mineral with a moh's hardness 6.
Description:   Pumice is light colored glassy rock that floats in water.
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