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Search found 3 matches |
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jim hill Replies: 4 Views: 5097 |
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Specific gravity 3.39 to 3.50 hardness above 8
The black lines I believe come from separation of pieces. |
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jim hill Replies: 2 Views: 4169 |
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41.7 grams. Submerged 15.8. Jumps between
-9 to-4. Hardness greater than beryal quartz |
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jim hill Replies: 3 Views: 7498 |
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I just started myself. I live in Bessemer PA. There are a lot of old quarries around here. When I asked a similar question I was told to focus on one group, so I picked up every interesting stone, wit ... | |
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