Rocks & Minerals B/C

[Clematis]

Question (Click to Show Hidden Text)

[img]http://www.minerals.net/MineralImages/barite4.jpg[/img]
1. Identify
2. What are crystals that form with this habit (and coloring) commonly called?

[Magikarpmaster629]

Question (Click to Show Hidden Text)

[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

[Clematis]

Question (Click to Show Hidden Text)

[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

[Magikarpmaster629]

ID the two minerals and list a difference in their properties key to differentiating them:

[bonysteak]

top is augite?? Bottom ishornblende Um they have slightly diff cleavage angles to tell them apart, otherwise it's really hard

[Magikarpmaster629]

top is augite?? Bottom ishornblende Um they have slightly diff cleavage angles to tell them apart, otherwise it's really hard

Yep, your turn

[bonysteak]

er...rookie question, how do I upload a photo?

[Unome]

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.

[bonysteak]

I wanted to post my own picture from my desktop but couldn't figure out how D:

ID and chemical formula (Click to Show Hidden Text)

[img]http://www.mindat.org/hpthumbs/HP_237319_565_424.jpg[/img]

[Clematis]

I wanted to post my own picture from my desktop but couldn't figure out how D:

ID and chemical formula (Click to Show Hidden Text)

[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.

Answer (Click to Show Hidden Text)

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.