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 Post subject: Help With Identifying This Rock
PostPosted: Mon Jun 21, 2021 4:49 pm 
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Hello,

Need some help with identifying this rock. Thanks in advance for your help.


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 Post subject: Re: Help With Identifying This Rock
PostPosted: Mon Jun 21, 2021 8:01 pm 
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Location: San Francisco
I would start by defining this unknown as a mineral not a rock.
Rocks are composed of several minerals. This specimen appears to be only one.

In order to identify a mineral, we need to collect information to rule OUT possibilities.


Report back with additional clues.


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 Post subject: Re: Help With Identifying This Rock
PostPosted: Mon Jun 21, 2021 8:45 pm 
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Thanks for the video. The mineral is non-metallic. The breakage is cleavage on one side, and on the other side fracture. Took a picture of it with me holding a flashlight under it to make the colors a bit more discernable. As for hardness, I scratch tested it on a quarter, and it scratched it on the slightest contact. That's all the info I have...Any thoughts?


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 Post subject: Re: Help With Identifying This Rock
PostPosted: Thu Sep 02, 2021 2:10 pm 
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Try a few drops of muratic acid...or even vinegar. Does it fizz?


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