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Quartz?
Nov 25, 2017 13:39:09 GMT -5
Post by tims on Nov 25, 2017 13:39:09 GMT -5
This is a shed drawer find. Can't tell if it was cut ... it doesn't look polished but the flat edges don't show saw marks. Can make out traces of the crystal structure on one flat. Fluoresces bright blue with my cheap UV flashlight:
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Post by MrMike on Nov 25, 2017 14:10:49 GMT -5
Need the test hardness & reaction to acid, could be calcite or fluorite.
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Quartz?
Nov 25, 2017 15:23:23 GMT -5
Post by tims on Nov 25, 2017 15:23:23 GMT -5
Doesn't scratch with iron nail, will try muriatic ... TIA
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lookatthat
Cave Dweller
Whatever there is to be found.
Member since May 2017
Posts: 1,360
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Post by lookatthat on Dec 2, 2017 15:12:12 GMT -5
I'm thinking Fluorite...
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Dec 2, 2017 17:06:49 GMT -5
Need better pics of the crystals on top.
I'm on the flourite train too.
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Quartz?
Dec 3, 2017 16:52:29 GMT -5
Post by rmf on Dec 3, 2017 16:52:29 GMT -5
If an Iron nail (mohs Hardness of 5 more or less) will not scratch it then it is not Fluorite which has a hardness of 4. Will it scratch glass (hardness of 6) Do you have any known pieces of Quartz? If so try to scratch it since Quartz has a hardness of 7
Yess a better image of the top crystals would help. It does look like Quartz but why would it fluoresces blue?
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