Geology

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troyunrau@lemmy.ca

Rock ID Thread (lemmy.ca)

submitted 1 year ago by troyunrau@lemmy.ca to c/geology@lemmy.ca

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As requested by @zpnrg1979@lemmy.ca -- post pictures of rocks. We will try to identify them.

Note that copy/pasting pictures works in the comment field, assuming you're on the website. How it works in the multitude of apps -- dunno ;)

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[–] troyunrau@lemmy.ca 3 points 1 year ago (2 children)

You're absolutely right that it is copper porphyry ore (from an abandoned historical artisanal mine). However, I don't have the sample and cannot perform the tests beyond that point. Just wanted to kick-start the thread :)

[–] 908musdf@lemmy.one 2 points 1 year ago

Oh, a pop quiz! I will try to post one too from a computer later.

[–] zpnrg1979@lemmy.ca 2 points 1 year ago (1 children)

I would have called it malachite, maybe it effervesces due to some carbonate in the rock? Whip out your portable XRD!

[–] troyunrau@lemmy.ca 2 points 1 year ago

Yeah, almost certainly malachite. :)