Rocks and Minerals Question Marathon

[Wadhk]

oh I know (Click to Show Hidden Text)

epidote

Correct.

Probably wrong (Click to Show Hidden Text)

Tourmaline?

How do you tell the difference between epidote and tourmaline? They both look really alike.

I'm not really sure. There's difference in crystal shape, a epidote is a bit softer than tourmaline.

[hexagonaria]

Ooh yay. I've been operating under the assumption that epidote occurs in clusters, while tourmaline is usually a single crystal. That's what I've observed, though i'm not sure if that rule is 'set in stone.' Haha

In Soviet Russia, mineral identify you!

but we live in America, so identify this mineral (Click to Show Hidden Text)

http://www.millenniumminerals.com/gfx/stones/stones/bluechalcedony.2bg.jpg

[fishman100]

Ooh yay. I've been operating under the assumption that epidote occurs in clusters, while tourmaline is usually a single crystal. That's what I've observed, though i'm not sure if that rule is 'set in stone.' Haha

In Soviet Russia, mineral identify you!

but we live in America, so identify this mineral (Click to Show Hidden Text)

http://www.millenniumminerals.com/gfx/stones/stones/bluechalcedony.2bg.jpg

Um, how about another picture...?

[Allinea]

Ooh yay. I've been operating under the assumption that epidote occurs in clusters, while tourmaline is usually a single crystal. That's what I've observed, though i'm not sure if that rule is 'set in stone.' Haha

In Soviet Russia, mineral identify you!

but we live in America, so identify this mineral (Click to Show Hidden Text)

http://www.millenniumminerals.com/gfx/stones/stones/bluechalcedony.2bg.jpg

Um, how about another picture...?

LOL... laughed so hard.

[hexagonaria]

Wow, fail

try this one (Click to Show Hidden Text)

[img]http://www.gemstoneslist.com/images/moss-agate.jpg[/img]

[10manwire]

I'm probably wrong... :? (Click to Show Hidden Text)

Agate?

[Pond Knight]

Answer? (Click to Show Hidden Text)

Is it moss agate?

[Pond Knight]

Answer? (Click to Show Hidden Text)

Is it moss agate?

Sorry, i pressed the submit button twice.

[hexagonaria]

I'm probably wrong... :? (Click to Show Hidden Text)

Agate?

Yes, tis agate

[10manwire]

Whoa! I didn't know I was right

Click for the next one! (Click to Show Hidden Text)

[img]http://www.museumwales.ac.uk/geology/mineralogy/media//2/5/2/thumb_350/sphalerite4.jpg[/img]

Mineral class?
Etymology of name?