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SNOWFLAKE OBSIDIAN * 3-4" Size * .5-1 Lbs * Black White Volcanic Glass
- Item No : 404755729569
- Condition : New
- Brand : No brand Info
- Seller : rocksology
- Current Bid : US $14.22
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* Item Description
- Obsidian is produced when felsic lava extruded from a volcano cools rapidly with minimal crystal growth. It is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica content) causes a high viscosity, which, upon rapid cooling, results in a natural glass forming from the lava.
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