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identify help please

Posted by Conrad Baugh  
avatar identify help please
December 21, 2011 10:25PM
Both of these I collected around an old iron mine in the Blue Ridge Mountains, VA. the picture " unknown looks like Kayanite to me. The pic "unknown -2" has these metallic looking crystals scattered about it. i have several pieces of them, but have no idea what they are. They are not heavy, but resemble a black tourmaline with the luster of Sphalerite. any ideas??

open | download - Unknown , Iron Ridge, VA.JPG (289.5 KB)
open | download - Unknown-2 Iron Ridge,VA.JPG (327.8 KB)
avatar Re: identify help please
December 21, 2011 10:37PM
Hi Conrad,

The first (unknown) I think looks like an amphibole, posssibly actinolite, but for a sure identification advanced analyses is needed. The second (unknown-2) looks like rutile.

Re: identify help please
December 21, 2011 10:53PM
I agree with Peter on both.
avatar Re: identify help please
December 21, 2011 11:47PM
Thank you for the feedback. I want to clean the iron off the first one you think is actinote. Do you know what i should use? I dont want to ruin the specimen.
Re: identify help please
December 22, 2011 01:18AM
I usually use HCl first, rinse thoroughly in water, then follow it with Super iron out. I find the HCl helps to remove iron stained crusts like calcite and the super iron out gets the iron staining that HCl doesn't.
avatar Re: identify help please
December 22, 2011 01:59AM
super iron out...nice. i will try that.

if you would, take a look at this crystal. it was collected by my grandfather and passed down to me. i never knew him, but i had his box of rocks when i was a kid and they were all treasures to me. i always thought that this was a calcite, but it does not look like any calcite that i see. the formation looks as if it was created in a hot environment. i am not a geologist so i really have no idea. i have been wondering about this specimen my entire life.let me know what you think and thank you again for helping.
open | download - UNKNOWN-2.JPG (221.4 KB)
open | download - UNKNOWN-4.JPG (184.8 KB)
Re: identify help please
December 22, 2011 03:27PM
Looks like calcite to me but somewhat dissolved, possibly by ground water.
avatar Re: identify help please
December 22, 2011 06:09PM
Water erosion makes sense. thank you again for your help

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