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Gypsum locality

Posted by Tom Mortimer  
Tom Mortimer May 06, 2019 03:57PM

I acquired several of these selenite specimens from an old collection last summer. Specimen is about six inches across.
I recall these were quite abundant at mineral shows a few decades ago. This one was likely purchased in the early '70's.
There was no locality information with these. My fuzzy recollection is that they came from the American southwest.
Looking for locality suggestions.
Tom Mortimer
Donald B Peck May 06, 2019 05:07PM
Tom, It looks a lot like the selenite dessert roses that come from the Pitcher, OK area, but there are probably many other places where they are found.

A. Mathauser May 06, 2019 11:24PM
From Ahumaha, Chihuahua, Mexico: https://www.mindat.org/loc-217059.html

But many other places too, as Don states...
Dana Slaughter May 07, 2019 02:57AM
Based on presumed era of acquisition, I agree that it is almost certainly from Chihuahua, Mexico.
Steve Hardinger May 07, 2019 04:36PM
Too many possible localities to be certain: Texas, Saudi Arabia, Algeria, to name a few.
Keith Compton May 11, 2019 02:41AM

Similar material was discussed here so I would plug for Texas (certainly south west):

Gregg Little May 16, 2019 01:13AM
This shot is of a gypsum specimen labelled Chihuahua, Mexico (Ahumada Municipality?) that I purchased in May 1974 in one of the west coast mineral shows (probably Vancouver, BC). Similar vintage and similar habit.

Frank K. Mazdab May 16, 2019 02:02AM
I suppose in these cases, the determined collector with perhaps too much time and money could have some of the incorporated sand evaluated for provenance... ;-)
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