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Can anyone help me identify this? I thought it was galena but it is very hard and does not tarnish.

+1 vote

asked Nov 27, 2015 by Sad sack (150 points)

2 Answers

0 votes
Might be smokey quartz, which is hard and doesn't tarnish
answered Jan 10, 2019 by linkisnotzelda (5,390 points)
That looks metallic and opaque. Smokey quartz is transparent/tranlucent and doesn't quite look that metallic. So I would have to disagree with that.
0 votes
Sorry, but it looks more like obsidian to me. The concave chips indicate a very hard substance. They are called conchoidal fractures. Put a strong light source behind it and see if light travels through it. That would mean it is translucent. If not, it is opaque, meaning light will not travel through it.
answered Jan 11, 2019 by Weasel (58,940 points)
I see where you're coming from, but the straight edges and the light color make it hard to tell... a hardness test would also help with identification.
It looks too metallic to be obsidian.