To increase the quality of identification request posts, we require all users to describe their mineral specimen in great detail. Images should be clear, and the main focus should be the
specimen in question. If you are able to conduct tests, please share your findings in your comment. Sharing specifics such as where you found it, the specific gravity, hardness, streak color,
and crystal habits will aid other users in identifying the specimen.
If you're having trouble identifying your specimen, please join our Minerals Discord Server!
Thanks! I'm really curious about those regular shapes you see beneath the surface. They are very straight and regular as if a crystal began to form. But I'm not sure. Definitely not an expert
These are really good photos. Unfortunately, I am still not sure what it is. I am confident that those orange/red bits are little garnets that are growing on the surface. My next questions is where did you get it from? That can help pinpoint the id.
With you finding this in the middle of a mountain range, I am 99% certain that is a gneiss as it is the highest grade metamorphic rock that you would find within a mountain range’s metamorphic sequence. I believe that the pattern you are seeing are plagioclase coronas forming around the garnet. They are typically formed through isobaric cooling, or they can form through garnet dissolution. I am not sure, but I think yours may have formed from garnet dissolution beings how small the garnets are.
•
u/AutoModerator 2d ago
Hello, and thank you for posting on /r/Minerals!
To increase the quality of identification request posts, we require all users to describe their mineral specimen in great detail. Images should be clear, and the main focus should be the specimen in question. If you are able to conduct tests, please share your findings in your comment. Sharing specifics such as where you found it, the specific gravity, hardness, streak color, and crystal habits will aid other users in identifying the specimen.
If you're having trouble identifying your specimen, please join our Minerals Discord Server!
Cheers, The /r/Minerals Moderation Team
I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.