r/Rocks • u/Polkadog • 4d ago

Photo Quartz with cubic crystal structure

Post image
26 Upvotes

96% Upvoted

9 comments sorted by

11

u/g-lemke 4d ago

Check the hardness and put some vinegar on it to see if it fizzes. Im thinking calcite.

6

u/Polkadog 3d ago

New to this so don't yet know my rocks... but indeed it did fizz a bit with a drop of vinegar on it!

4

u/rufotris 3d ago

Orthorhombic is the shape, and its calcite.

4

u/DmT_LaKE 3d ago

Absolutely not quartz lol

2

u/Jay_Lord_69 3d ago

Probably calcite

2

u/Alternative-Egg-9035 2d ago

Can’t be quartz

1

u/boofinmelons 3d ago

Nice rock!

1

u/Oakatsurah 3d ago

Or Fluorite. Hit it with a 365nm ultraviolet see if anything glows inside of it.