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UV Mineralsflorescent calcite
3rd May 2017 19:04 UTCJennifer Cindrich
3rd May 2017 20:55 UTCAlexander Ringel
3rd May 2017 23:28 UTCJennifer Cindrich
4th May 2017 01:43 UTCPaul Brandes 🌟 Manager
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> what if it has four different colors?
Calcite can come in a large range of fluorescent colours, it all depends on what activator(s) (impurities) are in it.
Also, it may not be all calcite. There are plenty of things in the Hill Country that fluoresce and could be mixed with the calcite.
4th May 2017 02:01 UTCAlexander Ringel
4th May 2017 03:36 UTCWayne Corwin
4th May 2017 12:29 UTCJennifer Cindrich
4th May 2017 12:39 UTCAlexander Ringel
4th May 2017 13:15 UTCJennifer Cindrich
4th May 2017 14:04 UTCPaul Brandes 🌟 Manager
I believe that's where we're going with this....
4th May 2017 14:25 UTCJennifer Cindrich
4th May 2017 16:00 UTCBob Harman
To help ID your specimen, put several drops of HCl on several areas of the example, including the area where I am concerned. If there is no fizzing, then your example, in that area, would neither be calcite nor aragonite. CHEERS......BOB
5th May 2017 13:17 UTCJennifer Cindrich
and yes, I acid washed the whole thing.
I like the ''look'.
19th May 2017 14:01 UTCJoel Dyer
I had a look at one of your samples today (Sample2 Site3). In the circled area of one piece, there were minute, bright-red spots that were highly fluorescent (orange-red) and extremely luminescent under 532nm laser, even though I cut the power down to 25% of max.
The bright spots quickly dissolved in water, and the colour looked unnatural, so it looks like that might have been some synthetic contamination. The integration (=exposure) times in both photos are very short & longer exposures did not produce a decent ID spectrum for the possible contamination.
But, another piece I broke of from the same sample had pronounced bluish fluorescence (shown in the photo) and strong blue-white phosporescence that last about 7 seconds afer turning off the UV lamp.
Clearly, both pieces are calcite, but this is the first calcite I've handled that was phosphorescent. I don't know how many localities have phosporescent calcite, so don't know how common the phenomenum in calcite is.
Cheers,
Joel
19th May 2017 22:27 UTCEmil Box
Terlingua, Texas
Miami, Florida
Lovington, Deming, New Mexico
St. Andreasberg, Germany
Agrigento, Sicily
Lieber: Iberg, Winterberg, Germany. Green fluorescing calcite often phosphoresce.
Milo
20th May 2017 12:12 UTCJennifer Cindrich
I thank you for your hard work in confirming that the calcite piece is indeed calcite and the phosphorescence that it has.
It is very exciting to me to finally get confirmation on my find in my yard. I will keep digging and see what else I can find, as the color in the pieces I recover keep getting brighter yet!
Cheers,
Jennifer
20th May 2017 13:49 UTCEd Clopton 🌟 Expert
20th May 2017 23:04 UTCWayne Corwin
How deep have you dug so far?
21st May 2017 11:59 UTCJennifer Cindrich
About one foot- to a foot 1/2 deep.
Jennifer
21st May 2017 18:24 UTCEmil Box
Green (greenish) fluorescent calcite that phosphoresce:
Rauris, Austria
Nuxis, Sardegna, Italy
Brandberg, Namibia
Lavrio, Greece (red fluorescing don't phosphoresce)
Dornap, Germany
Hagen-Halden, Germany
Orange fluorescing with phosphorescence:
Hildfeld, Germany
Gleason (1960):
Zins sulfide made phosphorescent with a trace of copper.
Dye solutions made phosphorescent with gelatin.
Milo
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