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Colorado Prospector - Gem and mineral prospecting and mining forums _ Gem and Mineral Specimen Finds or Processes _ Help ID’ing...

Posted by: ChuckD Oct 23 2017, 09:56 AM

I found this in the Texas Hill Country in a dry creek bed, about 4 miles south of Utopia, Tx. I included a picture of the area in which it was found in case it might lend some clues as to it’s identity. This is the only piece like this that I found. This area is mostly limestone I believe. This sample is not wet- it has a “sheen” to it when rotated. Anyhow, can anyone help? (Sorry if the pics don’t post or come out sideways... I’m still learning all this internet stuff)



Posted by: swizz Oct 23 2017, 07:31 PM

hmmmm... my guess is Calcite or Microcline.

Posted by: ChuckD Oct 23 2017, 07:42 PM

QUOTE (swizz @ Oct 23 2017, 09:31 PM) *
hmmmm... my guess is Calcite or Microcline.

Thanks, Swizz!

Posted by: Denise Oct 25 2017, 10:32 AM

chin.gif Always hard to tell just from pics, but I have to agree with Swizz....looks like a cool piece of Microcline! happy112.gif

Posted by: Dave S. Oct 26 2017, 03:31 PM

My guess is calcite (the main mineral in limestone)

Looks like weathered calcite crystals, or a calcite formation that replaced a fossil (like coral).


Posted by: ChuckD Nov 6 2017, 07:51 PM

QUOTE (Dave S. @ Oct 26 2017, 03:31 PM) *
My guess is calcite (the main mineral in limestone)

Looks like weathered calcite crystals, or a calcite formation that replaced a fossil (like coral).


Thanks, Dave!

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