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Identity HelpNeed help with locality on corundum
4th Aug 2012 20:52 UTCDonald Slater
Thanks
4th Aug 2012 23:02 UTCEmil Box
Among other corundum occurrences is mentioned "Crystals as much as 35 cm (14") in length have been observed in gneiss near Salesville, Gallatin Co., Montana..."
I hope it helps.
Greetings
Milo
6th Aug 2012 03:02 UTCRock Currier Expert
6th Aug 2012 08:43 UTCBart Cannon
There are only two colors of corundum in those places.
Gray, sometimes with a hint of blue, and plum color.
Never green.
There are many placer occurrences such as Cottonwood Creek, and those display every color of the rainbow, but those "sapphires" are never as large as what you describe.
Bart
6th Aug 2012 22:27 UTCAnonymous User
7th Aug 2012 01:23 UTCOwen Lewis
7th Aug 2012 22:05 UTCDonald Slater
7th Aug 2012 23:49 UTCAnonymous User
7th Aug 2012 23:58 UTCAnonymous User
http://www.mindat.org/photo-469224.html
http://www.mindat.org/photo-385873.html
14th Aug 2012 22:22 UTCDonald Slater
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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: March 28, 2024 23:02:58