a friend of mine recently acquired a fluorescent specimen labeled simply Mineral Y from Crestmore Quarry, California. The fluorescence is purple (sw) Appears as a whitish coating on rock. Anyone have any idea what this stuff is? Chris http://www.mindat.org/forum.php?read,6,55440,55440#msg-55440 Tue, 18 Jun 2013 04:47:45 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,6,55440,251981#msg-251981 http://www.mindat.org/forum.php?read,6,55440,251981#msg-251981 www.minsocam.org]]]> Fred E. Davis General Sat, 11 Feb 2012 14:15:16 +0000 http://www.mindat.org/forum.php?read,6,55440,251980#msg-251980 http://www.mindat.org/forum.php?read,6,55440,251980#msg-251980 Uwe Kolitsch General Sat, 11 Feb 2012 14:04:53 +0000 http://www.mindat.org/forum.php?read,6,55440,251948#msg-251948 http://www.mindat.org/forum.php?read,6,55440,251948#msg-251948
John Betts]]> John Betts General Sat, 11 Feb 2012 05:38:26 +0000 http://www.mindat.org/forum.php?read,6,55440,66965#msg-66965 http://www.mindat.org/forum.php?read,6,55440,66965#msg-66965 Jason B. Smith General Fri, 08 Jun 2007 01:15:54 +0000 http://www.mindat.org/forum.php?read,6,55440,66737#msg-66737 http://www.mindat.org/forum.php?read,6,55440,66737#msg-66737
I just won a piece on eBay - from the description:

Mineral Y refers to tentative names given to unidentified Crestmore
minerals by Josoeu Munooctt in his 1961 article in the "American
Mineralologist". He describes mineral Y as a "copper bearing
calcium silicate hydrate". I have not been able to find a newer name
for this mineral. It has a very distinctive fluorescence among Crestmore
Minerals so should be fairly easy to identify if you can find newer
references.

I don't have a copy of that article, but I hope this helps!

Alan]]> Alan Guisewite General Tue, 05 Jun 2007 17:49:16 +0000 http://www.mindat.org/forum.php?read,6,55440,55440#msg-55440 http://www.mindat.org/forum.php?read,6,55440,55440#msg-55440
Chris]]> Chris Stefano General Wed, 10 Jan 2007 04:04:48 +0000