Page 13 of 21

Re: Rocks & Minerals B/C

Posted: December 14th, 2016, 2:18 pm
by Clematis
[img]http://www.minerals.net/MineralImages/barite4.jpg[/img]
1. Identify
2. What are crystals that form with this habit (and coloring) commonly called?

Re: Rocks & Minerals B/C

Posted: December 19th, 2016, 3:49 pm
by Magikarpmaster629
Clematis wrote:
[img]http://www.minerals.net/MineralImages/barite4.jpg[/img]
1. Identify
2. What are crystals that form with this habit (and coloring) commonly called?
1. Barite
2. Rose variety

Re: Rocks & Minerals B/C

Posted: December 24th, 2016, 7:29 am
by Clematis
Magikarpmaster629 wrote:
Clematis wrote:
[img]http://www.minerals.net/MineralImages/barite4.jpg[/img]
1. Identify
2. What are crystals that form with this habit (and coloring) commonly called?
1. Barite
2. Rose variety
Correct. More specifically though, it's also called a desert rose

Re: Rocks & Minerals B/C

Posted: December 25th, 2016, 7:07 am
by Magikarpmaster629
ID the two minerals and list a difference in their properties key to differentiating them:
Image
Image

Re: Rocks & Minerals B/C

Posted: December 27th, 2016, 2:39 pm
by bonysteak
top is augite?? Bottom ishornblende Um they have slightly diff cleavage angles to tell them apart, otherwise it's really hard

Re: Rocks & Minerals B/C

Posted: December 27th, 2016, 2:48 pm
by Magikarpmaster629
bonysteak wrote:top is augite?? Bottom ishornblende Um they have slightly diff cleavage angles to tell them apart, otherwise it's really hard
Yep, your turn

Re: Rocks & Minerals B/C

Posted: December 27th, 2016, 4:18 pm
by bonysteak
er...rookie question, how do I upload a photo?

Re: Rocks & Minerals B/C

Posted: December 27th, 2016, 4:54 pm
by Unome
bonysteak wrote:er...rookie question, how do I upload a photo?
Was about to upload a screenshot showing how to do it, but realized the forum update appears to have broken the permissions again... once bernard fixes it, it's on a tab at the bottom next to "Options."

Edit: Or you can do

Code: Select all

[img][/img]
and put a URL in there.

Re: Rocks & Minerals B/C

Posted: December 29th, 2016, 8:48 pm
by bonysteak
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]

Re: Rocks & Minerals B/C

Posted: December 31st, 2016, 9:06 am
by Clematis
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