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Re: Rocks & Minerals B/C

Posted: December 31st, 2016, 2:50 pm
by bonysteak
Clematis wrote:
bonysteak wrote:I wanted to post my own picture from my desktop but couldn't figure out how D:
[img]http://www.mindat.org/hpthumbs/HP_237319_565_424.jpg[/img]
You could try uploading your pictures to a free image hosting site. Then you could take the image URL from there to display it here.
Assuming the white mineral the main crystal in the picture is on is quartz - SiO2, that would make the green crystal Epidote - Ca2(Al,Fe)2(SiO4)3(OH) by process of elimination because Olivine and Quartz don't like forming together due to their opposite ends in the Bowen's reaction series.
I hate the green minerals in this event. :P
YO YOU GOT IT GOOD JOB also thanks for that tidbit of information I did not know that before (both tidbits, I guess...both the photo thing and the quartz thing) 8-)

Your turn!

Re: Rocks & Minerals B/C

Posted: January 1st, 2017, 7:39 pm
by Jamerz
Heya, I'm pretty new here. So...how does this work? Do we just test each other on rocks and minerals?

Re: Rocks & Minerals B/C

Posted: January 2nd, 2017, 12:29 pm
by Unome
Jamerz wrote:Heya, I'm pretty new here. So...how does this work? Do we just test each other on rocks and minerals?
Welcome to the forums!

Question Marathon Explained. R&M (as with most events) follows the "wait until the person confirms your answer" method.

Re: Rocks & Minerals B/C

Posted: January 6th, 2017, 6:36 am
by John Richardsim
Aight, let's get this going again.


ID:
Image

Re: Rocks & Minerals B/C

Posted: January 6th, 2017, 3:01 pm
by arvind_r
Is this Bornite?

Re: Rocks & Minerals B/C

Posted: January 6th, 2017, 3:25 pm
by John Richardsim
arvind_r wrote:Is this Bornite?
Try again.

Re: Rocks & Minerals B/C

Posted: January 9th, 2017, 5:57 pm
by asthedeer
John Richardsim wrote:
arvind_r wrote:Is this Bornite?
Try again.
Chalcopyrite?

Re: Rocks & Minerals B/C

Posted: January 9th, 2017, 8:27 pm
by John Richardsim
asthedeer wrote: Chalcopyrite?
Yep, your turn.

Re: Rocks & Minerals B/C

Posted: January 12th, 2017, 11:06 pm
by Jamerz
Wait, how do I make it that black text box thing?

Re: Rocks & Minerals B/C

Posted: January 13th, 2017, 5:14 am
by Unome
Jamerz wrote:Wait, how do I make it that black text box thing?

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