Obsidian……Can you use it?
Here is another Ask-a-Geologist that we received. Obsidian is one of our favorite rocks. Children love this rock too!
Question: What is obsidian rock used for?
Answer: In ancient times, obsidian was used to made crude knives and tools. Today, obsidian is used in the production of rock wool, knives and jewelry.
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Filed under: Geology / Earth Science, Rocks on July 23rd, 2009
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