Can you identify this rock?

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Offline federico

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Can you identify this rock?
« on: 20/04/2014 03:27:26 »
[attachment=18700][attachment=18702]Hi! i'm new in this forum. I'm ten years old. I wonder if anyone could help me identify this rock. I found it in the rainforest of Misiones in Argentina. Thank you.

[MOD EDIT - please phrase titles as questions in line with AUP]
« Last Edit: 04/06/2014 11:04:20 by Georgia »

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Offline RD

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Re: help in rock identification
« Reply #1 on: 20/04/2014 04:37:22 »
Something "platy". e.g. ...

Quote


Baryte Desert Rose
Sandstone concretion - a rosette aggregate of platy baryte
crystals enclosing red sand grains
Size: 25cm
http://www.earthsciences.hku.hk/shmuseum/earth_mat_2_2_2.php

Posting in a forum dedicated to mineralogy sounds like a better bet , e.g. ...
http://www.mindat.org/msgboard-11.html
« Last Edit: 20/04/2014 04:54:34 by RD »

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Offline Bill S

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Re: help in rock identification
« Reply #2 on: 26/04/2014 23:05:38 »
If it's soft enough, it could be selenite. (H2, if I remember rightly, baryte is 3 - 3.5)
There never was nothing.