Buscaste: Rock Specimens
Rock specimens are useful for studying textures, grain sizes, and other features altered by pressure, temperature, and other natural forces. Different select categories of rock specimens are available for purchase as well, including metamorphic, igneous, and sedimentary rocks. Sets of rock specimens are housed in compartmentalized collection boxes, with descriptions of each specimen printed for easy confirmation of identification. These rock specimens are carefully selected to be the highest quality to provide students with a suitable introduction to earth materials and their characteristics.
Ward's Science Essentials® Limestone
Supplier: Avantor
Limestone is a gray calcium carbonate that will fizz with dilute HCl.
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Ward's Science Essentials® Shale
Supplier: Avantor
Shale is a rich, gray fissile clay rock.
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Ward's® Sandstone (Banded)
Supplier: Avantor
Red, medium, to coarse-grained iron oxide cement; shows hematite bands.
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Ward's Science Essentials® Coquina
Supplier: Avantor
Coquina is variety of limestone made up of shell fragments.
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Ward's Science Essentials® Phyllite
Supplier: Avantor
Phyllite is a light-gray foliated rock formed from metamorphosed slate.
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Ward's Science Essentials® Gray Slate
Supplier: Avantor
Gray metamorphosed shale showing "slaty cleavage".
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Ward's Science Essentials® Breccia
Supplier: Avantor
Breccia is a sedimentary rock made up of angular rock fragments.
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Ward's® Limestone (Encrinal)
Supplier: Avantor
Gray with line crinoid columnal fragments.
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Ward's® Limestone (Travertine)
Supplier: Avantor
Earthy, porous calcareous tufa.
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Ward's Science Essentials® Red Slate
Supplier: Avantor
Slaty metamorphic rock containing hematite giving it its red color.
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Ward's Science Essentials® Rhyolite
Supplier: Avantor
Rhyolite is a pale, pink felsic rock with lower density than most igneous rocks.
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Limestone (Coquina)
Supplier: Avantor
Buff-colored, coarse, detrital limestone, with cemented shell fragments.
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Ward's® Rhyolite (Gray)
Supplier: Avantor
Light gray, with flow structure.
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Ward's Science Essentials® Dolostone
Supplier: Avantor
Dolostone is a chemical sedimentary rock consisting of magnesium and calcium
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Ward's® Basalt (Flood)
Supplier: Avantor
Classic, dark; from the Columbia Plateau.
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Ward's® Andesite (Hornblende)
Supplier: Avantor
Abundant small black phenocrysts in a gray to brown matrix.
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Ward's Science Essentials® Sandstone
Supplier: Avantor
Red clastic rock composed of sand sized particles and hematite.
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Ward's Science Essentials® Chert
Supplier: Avantor
Chert is a microcrystalline, hard, silica mineral.
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Granite (Porphyritic)
Supplier: Avantor
Coarse-grained, with microcline, biotite and horblende phenocrysts.
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Ward's Science Essentials® Scoria
Supplier: Avantor
Scoria is a dark-colored rock formed from lava with a high gas content.
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Ward's® Gabbro
Supplier: Avantor
Coarse-grained plagioclase and pyroxene with some olivine.
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Ward's Science Essentials® Pink Marble
Supplier: Avantor
Pink/grey marble colored metamorphosed carbonate rock.
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Ward's® Pegmatite
Supplier: Avantor
Classic, very coarse-grained igneous texture.
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Ward's® Amphibolite
Supplier: Avantor
Dark, coarse-grained, and composed chiefly of hornblende.
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Ward's® Diorite
Supplier: Avantor
Coarse, “salt and pepper”: dark pyroxene and light andesine.
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Ward's® Peridotite (Coarse-Grained)
Supplier: Avantor
Dark gray, composed mostly of pyroxene and olivine.
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Ward's® White Marble
Supplier: Avantor
Gray to white metamorphosed carbonate rock.
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Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: VWR International
Supplier: VWR International