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Rock+Specimens
Description:
Obsidian is hard black colored, volcanic glass.
Description:
Gray andesite with large, blocky hornblende phenocrysts.
Description:
Gabbro is Mafic igneous rock formed deep underground consisting of olivine and pyroxene.
Description:
Carbonate rock formed by the precipitation from water.
Description:
Muscovite is a mica mineral cut to demonstrate basal cleavage.
Description:
Rhyolite is a pale, pink felsic rock with lower density than most igneous rocks.
Description:
Porphyritic igneous rock containing biotite, feldspar, and hornblende.
Description:
Coarse-grained, with microcline, biotite and horblende phenocrysts.
Description:
Brownish gray, kerogen-rich; commercial oil source.
Catalog Number:
(470026-266)
Description:
Dark, waxy, bitumin-rich.
Description:
Foliated biotite, coarse, silvery gray with quartz-feldspar bands.
Description:
Dark-green “verde antique”, containing some chlorite and calcite.
Description:
Red, medium, to coarse-grained iron oxide cement; shows hematite bands.
Description:
Black, fissile; commonly with carbonized fossil plant impressions.
Description:
White, mature, friable.
Description:
Introduce your students to Gray Andesite with large phenocrysts of hornblende.
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 is still displayed and you need assistance, please call us at 1-800-962-2660.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the
is still displayed and you need assistance, please call us at 1-800-962-2660.
This product is marked as restricted and can only be purchased by approved Shipping Accounts. To apply for a shipping account number, click here. If you need further assistance, call Customer Service at 800-962-2660 or email [email protected].
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