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Lapidary / Gemstone Community Forum
March 24, 2019, 01:15:43 am
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silly and easy what is it

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Author Topic: silly and easy what is it  (Read 358 times)
55fossil
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« on: August 01, 2015, 11:07:44 am »

    I should know but I am going with old timer's disease. I just forgot whether this is peacock ore or something with a better name. I made the mistake of grinding down an end to see if it would polish, oh well.  I appreciate the help.  thank you,  Neal


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Steve
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« Reply #1 on: August 01, 2015, 02:01:36 pm »

I know it as Peacock Copper........and no it doesn't polish worth a plugged nickle..................
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ileney
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« Reply #2 on: August 01, 2015, 07:19:39 pm »

I thought it was called chalcopyrite, but I am very definitely not an expert.
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vitzitziltecpatl
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« Reply #3 on: August 01, 2015, 07:41:27 pm »

Bornite?
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stonemon
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« Reply #4 on: August 01, 2015, 08:25:12 pm »

If my mineralogy training serves me... The sulfide is chalcopyrite, The alteration product that gives the peacock patina is bornite, and the catch all is peacock copper or ore. I believe that makes all of you correct!
Bill
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Isotelus
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« Reply #5 on: August 02, 2015, 05:48:48 am »

At the risk of sounding like my old college prof from Geology.

Well done. You got it right.

When smelted it is one of those ore's that can produce so much acid rain.
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Bryan


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