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16552
LocalitiesGreenlee County, Arizona, USA
18th Feb 2012 02:13 UTCSteve Stuart Expert
I picked up some material from the giveaway tables at the recent PMA Symposium in Redlands, California attributed to "near Morenci, Greenlee Co., Arizona". The minerals to look for were libethenite and pseudomalachite. I took the following three images (2-4 mm FOV) that appear to show both minerals, at least visually. Mindat has one location in Greenlee Co. with libethenite:
http://www.mindat.org/loc-28654.html
And, no locations with pseudomalachite. Also, no photos of either mineral. Is anyone out there familiar with the material? Perhaps someone who also attended or organized the PMA Symposium can chime in and provide more information about the locality, more than "near Morenci".
Thanks!
Steve Stuart
21st Feb 2012 06:45 UTCRobert Housley Expert
I expect that this rock in the road fill must have come from one of the many pre-open pit mines in the Morenci area, but have no idea which one. One would need to have a lot better knowledge of the mining and highway building history of the area than I do to even make a guess. That is why the location only reads "Morenci".
21st Feb 2012 16:51 UTCSteve Stuart Expert
22nd Feb 2012 20:17 UTCRobert Housley Expert
31st Mar 2012 15:07 UTCSteve Stuart Expert
"Steve,
I finally got a chance to run the Raman spectra of the green balls from Morenci. I ran both the larger dark green, almost black, balls and the smaller apple green balls. They are both pseudomalachite as we thought, so I think you can now confidently post your pictures.
Robert Housley"
I'll post some images to Mindat.
Steve
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 23, 2024 06:51:56