Types
Clinopyroxenites, Orthopyroxenites and Websterites
Pumice Rocks, Obsidian Rocks, Perlite Rocks, Porphyritic Rocks.
Features
Generally rough to touch, Host rock for Diamond, Is one of the oldest rock
Acidic in nature, Available in lots of colors
Archaeological Significance
Monuments
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Famous Monuments
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Sculpture
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Famous Sculptures
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Pictographs
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Petroglyphs
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Figurines
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Fossils
Absent
Absent