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Rock+Collections


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Description:   Gray, fine-grained, massive contact rock.
Description:   Breccia is a sedimentary rock made up of angular rock fragments.
Description:   Small, rounded pebbles and tightly cemented granules.
Description:   Red, medium, to coarse-grained iron oxide cement; shows hematite bands.
Description:   Slaty cleavage; contains hematite.
Description:   Coarse, “salt and pepper”: dark pyroxene and light andesine.
Description:   Medium-grained with biotite.
Catalog Number: (470218-840)

Description:   Without Glued-On Grains That Wear Off, Chart Stands up to Repeated use.
Description:   Rhyolite is a pale, pink felsic rock with lower density than most igneous rocks.
Description:   White, mature, friable.
Description:   Classic, very coarse-grained igneous texture.
Description:   Pink and gray bands, with biotite; shows good foliation.
Catalog Number: (470025-908)

Description:   A sawn and lacquered slab of classic Precambrian banded layers of hematite (iron) and quartz. Average size: 3" x 4". Ontario, Canada.
Description:   High grade metamorphosed rock showing bands of quartz, feldspar, and biotite.
Description:   Quartzite is hard, non-foliated rock formed from metamorphosed quartz sandstones.
Description:   Black, soft; most widely mined.
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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 call is still displayed and you need assistance, please call us at 1-800-962-2660.
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