Rocks and Minerals Question Marathon

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cookiecandy123
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Re: Rocks and Minerals Question Marathon

Post by cookiecandy123 » February 7th, 2013, 6:05 pm

Mstate16 wrote:I Copied the URL (left click) and was able to see the intended picture in my browser...
Aragonite? ; hardness of 3.5 to 4.0; Composition is CaCO3
For the hardness, did you know it off the top of your head?

Mstate16
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Re: Rocks and Minerals Question Marathon

Post by Mstate16 » February 7th, 2013, 6:15 pm

I knew it was soft around 3, but i did need to check my binder

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Re: Rocks and Minerals Question Marathon

Post by Pleistocene » February 7th, 2013, 6:20 pm

Mstate16 wrote:I Copied the URL (left click) and was able to see the intended picture in my browser...
Aragonite? ; hardness of 3.5 to 4.0; Composition is CaCO3
Correct your turn

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Re: Rocks and Minerals Question Marathon

Post by Mstate16 » February 7th, 2013, 6:52 pm

[img]http://www.minfind.com/mfthumbs/390_350_15930310624bfdfe974f792.jpg[/img]

cookiecandy123
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Re: Rocks and Minerals Question Marathon

Post by cookiecandy123 » February 7th, 2013, 6:53 pm

Mstate16 wrote:I knew it was soft around 3, but i did need to check my binder
Okay, thanks. I was just wondering if you had memorized the hardness. :)

eox
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Re: Rocks and Minerals Question Marathon

Post by eox » February 7th, 2013, 7:14 pm

is this orthoclase? the gem variety of feldspar? I only know this because i think ive seen this exactly picture before  :oops: . when it says on the list feldspar(orthoclase), does that mean we have to know both, or just feldspar. Can anyone give me a few qualities of orthoclase that make it identifiable? sorry for all the questions LOL

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Re: Rocks and Minerals Question Marathon

Post by Mstate16 » February 7th, 2013, 7:29 pm

You have the hard part, i am still looking for a little more though...

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Re: Rocks and Minerals Question Marathon

Post by eox » February 7th, 2013, 7:38 pm

It seems to have the same luster as feldspar, and its found in most granites? had to check the binder :/

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darkdeserthighway
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Re: Rocks and Minerals Question Marathon

Post by darkdeserthighway » February 7th, 2013, 7:51 pm

eox wrote:
is this orthoclase? the gem variety of feldspar? I only know this because i think ive seen this exactly picture before  :oops: . when it says on the list feldspar(orthoclase), does that mean we have to know both, or just feldspar. Can anyone give me a few qualities of orthoclase that make it identifiable? sorry for all the questions LOL
That's orthoclase? omg...lol
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Mstate16
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Re: Rocks and Minerals Question Marathon

Post by Mstate16 » February 7th, 2013, 8:26 pm

This is a rare yellow gemstone quality form of orthoclase (Called Noble Orthoclase) that is only found in what country?

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