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Rock ID - WA, state
Posted by: Myukili
Date: July 05, 2018 02:38PM
My friend gave me a handful of these rocks. She said she went to Mount Rainier on a rock expedition with a licensed professional. They are naturally this color. Could it be Azurite? My boyfriend suggested that it also might be mixed with copper and quartz




Re: Rock ID - WA, state
Posted by: Johnho
Date: July 05, 2018 04:22PM
Looks like bornite, a copper ore. I checked and there was a mine there called the Eagle Peak that mined this material.https://westernmininghistory.com/mine_detail/10104143/ It's very high grade ore. There was also the Mt. Rainier Mining Company. https://harrybipedhiking.com/2015/07/12/mount-rainier-mining-company/ There were others but these came up fast on Google.

Nice samples by the way. Bornite is also known as "peacock ore".



Edited 1 time(s). Last edit at 07/05/2018 04:23PM by Johnho.

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Re: Rock ID - WA, state
Posted by: Champ Ferguson
Date: July 05, 2018 06:20PM
I think Johnho nailed it.



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Re: Rock ID - WA, state
Posted by: Myukili
Date: July 05, 2018 08:02PM
wow Awesome thank you :) can I pick your brain more? how do all of those colors form?

Re: Rock ID - WA, state
Posted by: Johnho
Date: July 06, 2018 06:22PM
Here you go. I had to look this one up because I really didn't know. https://geology.com/minerals/bornite.shtml

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