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Posted by Michael Scheven  
November 07, 2011 12:45PM
Baryte-paragenesis from Miraflores, Peru


a few weeks ago I have purchased a nice specimen of yellow Baryte xls on Fe-Dolomite matrix, which is covered with "Hematite" xls. The "Hematites" have an habit similar to Pyrargyrite (both minerals are trigonal), and show partially cherry-redinternal reflexes (not untypical for both minerals), the lustre is black or gray fatty-metallic under the microscope, not typical for Hematite. I think, this mineral ist correctly labeled as Hematite ("Pyrargyrite" is a hypothesis with a low probability). Can you confirm my assumption, that these xls ar Hematite? - In the mindat-Gallery, respectively the mindat database there is no Hematite to find with respect to this special location.

Thanks a lot,
Re: Baryte
November 07, 2011 03:14PM
Are the xls large enough to check hardness?
Re: Baryte
November 08, 2011 05:44AM
No, they are only tiny (1 mm). I have checked the hardness indirectly by attempting to determine the strike color (due to Fe-Impurities in the underlying dolomite mostly brown, not red), and the xls seemed to be more creamy than Hematite. But this finding is subjective. An explanation for this finding could also be weathering of the Hematite.
Re: Baryte
March 29, 2012 03:57AM
Question? When did the spelling of Baryte change to barite and back again? i am just a little confused due to the fact that every text book and research paper I can find (in English) has it listed as Barite. Just want clarification on subject so I can impress my other collector friends with the facts. So hard to to have a good and constructive discussion when you do not have your facts to back you up.

Edited 1 time(s). Last edit at 03/29/2012 04:17AM by George Hinkle.
Re: Baryte
March 29, 2012 04:31AM
I don't think it actually "changed" - it's more a difference between British and American english, like aluminium/aluminum and sulphur/sulfur. And our official name regulating body, the IMA, uses the British version for some species and the American for others.
Re: Baryte
March 29, 2012 04:55AM
Thank you, Alfredo ----As for Micheal's statement / question, you might Google the mineral Paragenesis you find that in almost all the descriptions that it was in Hematite rich layers. Not an answer but may be an area to research.
avatar Re: Baryte
March 29, 2012 07:36AM
I only use barite when I am pissed of at the British.

Rock Currier
Crystals not pistols.

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