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07-11-2016, 06:48 PM
Thread: mystery Arkansas
by Brontosaurus- Replies
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This is not a specific gravity test. What...
This is not a specific gravity test. What standard of density or grade scale are you using in referring to the density of Arkansas stones in general?
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07-10-2016, 05:54 PM
Thread: mystery Arkansas
by Brontosaurus- Replies
- 22
- Views
- 2,491
Looks like a black Ark to me as well. As for...
Looks like a black Ark to me as well. As for determining density, maybe your method differs from density as determined by a specific gravity test (which is how I believe Arks are rated, Dan's for...
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