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cre84u
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« on: April 03, 2012, 03:19:06 pm » |
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What is it?
I bought this years ago from a fellow in Montana or did he say it was from Montana. I can't remember any more what it is or what he said it was.
I don't think it is Apache Gold nor do I think it is Covellite.
It looks like Pyrite in a blackish matrix or host rock.It is fairly heavy for it's size and it polishes very well. The host rock is slightly softer than the pyrite or what I think is pyrite.
Can anyone help?
Thanks
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Cal
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ScarlettoSara
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« Reply #1 on: April 03, 2012, 03:39:46 pm » |
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Its some great looking rock. Almost like Nipomo but I have never seen any that spotted.
Curious to know what this is too:)
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"I tramp a perpetual journey.”
― Walt Whitman, Song of Myself
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deb193
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« Reply #2 on: April 03, 2012, 04:22:28 pm » |
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i think pyrite in some other sulfate mineral. not sure what.
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- Daniel (when everything is exceptional, nothing is)  |
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mirkaba
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« Reply #3 on: April 04, 2012, 10:22:58 am » |
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Looks like Chalcocite and Chalcopyrite. Fun to cab but a little messy. Makes some great looking cabs.
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Bob
Gathering dust in Montana.
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cre84u
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« Reply #4 on: April 04, 2012, 02:58:07 pm » |
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I can see that it could be chalcocite but the hardness is stated at 2.5 to3 and what I have is much harder than that.
I suppose other minerals mixed in could make it harder.
I do appreciate you guys helping.
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Cal
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lithicbeads
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« Reply #6 on: April 04, 2012, 09:43:18 pm » |
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We have a local stone here in western
washington that looks very similar.Ours is a black carbonaceous slate with almost as much pyrite and the same problems with the open structure.This slate formed in layers between marine basalt flows and is found in a quarry that mines the metamorphosed basalt. The best of our rough has been impregnated with clear or light pink soapstone so the pitting goes away but as beautiful as the stone is it is still very soft. lots of unusual things out there.
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RockWrapsody
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« Reply #7 on: April 04, 2012, 10:32:22 pm » |
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All I have ever heard pyrite in matrix called is "Apache Gold". I have it in about 3 different matrix's. When I work the kind that you have, my water and everything around it gets black. It is soooooo messy! LOL
My 2 cents worth of knowledge.
Sheri
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cre84u
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« Reply #8 on: April 05, 2012, 09:35:47 am » |
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Michael, Yes a magnet does stick.
Unfortunately I don't know what that means.
Any ideas
Please explain
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Cal
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cre84u
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« Reply #10 on: April 05, 2012, 11:44:09 am » |
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Thanks Michael
I will do some googling and see what I can come up with.
Have a great Easter weekend
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Cal
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