If the volcanic glass obsidian is not considered a mineral, why is it considered a rock?
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If the volcanic glass obsidian is not considered a mineral, why is it considered a rock?
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Obsidian is not a mineral because it lacks a crystalline structure alt...View the full answer
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Related Book For
Conceptual Physical Science
ISBN: 978-0134060491
6th edition
Authors: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
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