this post was submitted on 31 Mar 2025
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What is this thing?

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submitted 6 days ago* (last edited 6 days ago) by [email protected] to c/[email protected]
 

A brittle rock made of glitter. It breaks in this linear fashion and can be pound into sand by a mortar and pestle.

Anyone got any clues?

Edit: Thanks for all the answers. I found it in Romania and after searching for forums of minerals from Romania, I got a few other clues.

It isn't conclusive to me yet, but the possibilities are:

  • Pyrit
  • Mica
  • Schist
  • Nagyágit
  • Calaverit
  • Sylvanit

Of these, Mica and Sylvanit fit the best (imo).

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[–] [email protected] 2 points 1 day ago* (last edited 1 day ago)

Not a rock, that's a mineral. Jesus, Marie…!

[–] [email protected] 38 points 6 days ago (1 children)
[–] [email protected] 32 points 6 days ago (1 children)

a better way to do it is post something like "look what a cool bauxit i found" and then just wait for them to angrily correct you 😄

[–] [email protected] 4 points 6 days ago

the linux support strategy i see

[–] [email protected] 23 points 6 days ago (2 children)
[–] [email protected] 7 points 6 days ago (1 children)
[–] [email protected] 2 points 2 days ago
[–] [email protected] 5 points 6 days ago (1 children)

African Grey is the only bird that's made me want a bird.

[–] [email protected] 1 points 2 days ago

Enjoy your loud, destructive, flying toddler for the next several decades! :)

[–] [email protected] 2 points 4 days ago

I'm not all that great at identification, despite having a sizeable rock collection myself, but I feel pretty confident in saying that you've got a type of mica schist. Schists often are primarily composed of mica.

[–] [email protected] 14 points 6 days ago
[–] [email protected] 6 points 6 days ago

As a kid, I got told that's pyrite, but I'm not sure how correct that is. Most images show the crystalline structure rather than brittle stone, but I was able to find this picture on Wikpedia:

[–] [email protected] 4 points 6 days ago

It might be a schist?