Mini Me Geology Blog » igneous

Obsidian……Can you use it?

tracyb — Thu, 23 Jul 2009 12:37:42 +0000

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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tracyb — Wed, 24 Jun 2009 15:10:11 +0000

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New Ask-a-Geologist Question: Igneous Rocks

tracyb — Fri, 12 Jun 2009 11:56:27 +0000

Question: What are some household items made out of igneous rock?

Answer: Many building materials are made of granite such as counter tops in homes. Pumice, shown here, is also used in products such as pumice stones which are used to smooth rough feet and in Lava Soap which is used to remove grease from hands.

For more great Ask-a-Geologist questions go to our website. To ask our geologist your own question, click here.