Mineral Factbook
Minerals A–Z
Identify
Sources & methods
Obsidian
Mineraloid
Obsidian is natural volcanic glass. It is not an IMA-recognized mineral species.
Photos
Krassotkin ·
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Krassotkin ·
CC0
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Commons
Ivan Petrovich Vtorov ·
CC BY-SA 4.0
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Commons
cogdogblog ·
CC BY 2.0
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Commons
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