Rocks and Minerals Question Marathon

[tornado guy]

Answer (Click to Show Hidden Text)

If it's not rose quartz or any of the above is it fluorite?

Ahhh, you took my answer!

[ragi]

does fluroite even get that pinkish red color

[hexagonaria]

does fluroite even get that pinkish red color

I think it can, but I've never seen fluorite with that fracture and structure before.

[fishman100]

Taken from my notes/http://www.minerals.net/mineral/fluorite.aspx:

It is one of the most varied colored minerals in the mineral kingdom

Fluorite has interesting cleavage habits. The perfect cleavage parallel to the octahedral faces can sometimes be peeled off to smooth out a crystal into a perfect octahedron. Many crystals, especially larger ones, have their edges or sections chipped off because of the cleavage.

That was what I used when (hopefully) ID'ing the mineral.

[quizbowl]

Nope!

[starfield]

If we're guessing red minerals... (Click to Show Hidden Text)

Spinel?

[quizbowl]

If we're guessing red minerals... (Click to Show Hidden Text)

Spinel?

Yes! Good job!
Your turn.

[starfield]

image (Click to Show Hidden Text)

[img]http://www.galleries.com/minerals/carbonat/ulexite/ulexite.jpg[/img]ID and what unique property does it exhibit?

[hexagonaria]

looks like... (Click to Show Hidden Text)

ulexite. It exhibits the internal reflection of light along its crystal axis, like a fiber optic cable.

[hexagonaria]

looks like... (Click to Show Hidden Text)

ulexite. It exhibits the internal reflection of light along its crystal axis, like a fiber optic cable.