"Avantor"
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Ward's Science Essentials® Tufa
Carbonate rock formed by the precipitation from water.
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Ward's® Science Essentials® Pegmatite
Pegmatite is igneous rock similar to granite but with larger crystals.
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Ward's Science Essentials® Obsidian
Clearance
Obsidian is hard black colored, volcanic glass.
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Ward's Science Essentials® Scoria
Clearance
Scoria is a dark-colored rock formed from lava with a high gas content.
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Ward's Science Essentials® Quartzite
Quartzite is hard, non-foliated rock formed from metamorphosed quartz sandstones.
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Ward's Science Essentials® Pink Gneiss
Pink Gneiss is foliated pink and black bands of biotite.
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Ward's Science Essentials® Red Slate
Slaty metamorphic rock containing hematite giving it its red color.
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Ward's Science Essentials® Gray Slate
Clearance
Gray metamorphosed shale showing "slaty cleavage".
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Ward's Science Essentials® Soapstone
Soapstone is a talc-schist primarily composed of talc.
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Ward's Science Essentials® Conglomerate
Clearance
Conglomerate is a sedimentary rock made up rounded quartz pebbles.
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