Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Unknown Mineral Specimen Help

Posted by Anonymous User  
Anonymous User
Unknown Mineral Specimen Help
March 03, 2012 04:14PM
Hi.. I picked up this specimen from an old collection an unfortunately it had no label with it.. Been doing some research but could not find anything similar to it. If anyone out there can help with ID and local, it would be greatly appreciated.. thanks.. Teresa confused smiley
open | download - feb509ub.jpg (126.6 KB)
open | download - feb509ud.jpg (149.8 KB)
open | download - feb509uf.jpg (99.2 KB)
avatar Re: Unknown Mineral Specimen Help
March 03, 2012 04:41PM
Hi Teresa,
Please read first thread in this section and give more data: hardness, streak, crystal shape, etc. Also a close up photos will help. We wait for your news...

Re: Unknown Mineral Specimen Help
March 04, 2012 05:31PM
Dear Teresa;

I can say that the clear xls are probably quartz & the pinkish-white ones are probably calcite or a similar carbonate; however, the black blades, bcs there is NO locality, could be ANYTHING. I'm afraid, even taking Jose's advice, that without someone performing some chem tests, those will remain a mystery. I would also want to know what the small white needles, amongst the calcite(?) xls are; they COULD help target a locality, which would key what the black xls are.

Here's another test you might try, if you can obtain a short wave UV; see if the calcites fluoresce, &, what color they do.

Your friend, Steve

Your Email:


  • Valid attachments: jpg, jpeg, gif, png, pdf
  • No file can be larger than 1000 KB
  • 3 more file(s) can be attached to this message

Spam prevention:
Please, enter the code that you see below in the input field. This is for blocking bots that try to post this form automatically. If the code is hard to read, then just try to guess it right. If you enter the wrong code, a new image is created and you get another chance to enter it right.

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2015, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 9, 2015 11:39:43