Unknown mineral. Does someone know what this is?
closed as off-topic by user12525, Peter Jansson, trond hansen, Erik, arkaia Sep 4 at 13:58
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions about rock identification requests are off-topic. For more information, see the announcement on meta." – Community, Peter Jansson, trond hansen, Erik, arkaia