Rocks & Minerals B/C 2017

[John Richardsim]

Identify (Click to Show Hidden Text)

[img]https://c3.staticflickr.com/6/5602/15629683010_7329f0ac0b_b.jpg[/img]

[John Richardsim]

Karp got it on IRC (Click to Show Hidden Text)

[img]http://i.imgur.com/eGR5lBr.png[/img]

[Magikarpmaster629]

Here is my question:

Large Picture (Click to Show Hidden Text)

[img]http://i.imgur.com/xA02dgS.jpg[/img]

1. ID
2. What number on Moh's hardness scale does this mineral represent?

[John Richardsim]

Here is my question:

Large Picture (Click to Show Hidden Text)

[img]http://i.imgur.com/xA02dgS.jpg[/img]

1. ID
2. What number on Moh's hardness scale does this mineral represent?

Well, I accidentally saw the url of this one, but for the sake of keeping this going... 1. Talc
2. 10...nah jk it's 1

[Magikarpmaster629]

Here is my question:

Large Picture (Click to Show Hidden Text)

[img]http://i.imgur.com/xA02dgS.jpg[/img]

1. ID
2. What number on Moh's hardness scale does this mineral represent?

Well, I accidentally saw the url of this one, but for the sake of keeping this going... 1. Talc
2. 10...nah jk it's 1

Yep, go ahead.

[John Richardsim]

Another gem one...and a green one! (Click to Show Hidden Text)

[img]https://upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Gemperidot.JPG/661px-Gemperidot.JPG[/img]

1. Identify the mineral.
2. What is the name given to gemstone-quality samples such as the one pictured?

[Unome]

This is basically a guess (Click to Show Hidden Text)

1. Corundum
2. Beryl

[John Richardsim]

This is basically a guess (Click to Show Hidden Text)

1. Corundum
2. Beryl

Nope.

[azuritemalachite]

I'm not quite sure (Click to Show Hidden Text)

I'm pretty certain that this is peridot, but I can't seem to remember what mineral the variety comes from
1)epidote (guess) 2)peridot

[John Richardsim]

I'm not quite sure (Click to Show Hidden Text)

I'm pretty certain that this is peridot, but I can't seem to remember what mineral the variety comes from
1)epidote (guess) 2)peridot

Gemstone correct, but it's a variety of olivine.

Close enough. Your turn.