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What kind of rocks spark 2024?

Charlotte Gonzales | 2023-04-17 02:40:17 | page views：1780
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Benjamin Lewis

Works at the International Seabed Authority, Lives in Kingston, Jamaica.
Flint, chert, jasper, and quartzite all have a hardness of about 6?. Granites are in the 6 range. Obsidian (volcanic glass) is in the 5 to 6 range. Any of these rocks are strong enough to generate sparks.
2023-04-27 02:40:17
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Ava Wilson

QuesHub.com delivers expert answers and knowledge to you.
Flint, chert, jasper, and quartzite all have a hardness of about 6?. Granites are in the 6 range. Obsidian (volcanic glass) is in the 5 to 6 range. Any of these rocks are strong enough to generate sparks.
Flint & Steel Fire Lighting Tips - Northwest Journal
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