Hi everyone,

I am planning on doing some experiments using Marcasite but have been
having a difficult time purchasing marcasite that doesn't turn out to be
pyrite. Please let me know if you know a good source of marcasite.

Thanks,
Dan

Dan

we have received good material from https://www.excaliburmineral.com/

We have not asked for marcasite, but they supplied other useful
material.  They seem to know what they have and what they sell. It is
worth checking them out.

KLaus

-------- Forwarded Message --------
Subject: [MSA-talk] Marcasite
Date: Thu, 5 Aug 2021 09:25:00 -0400
From: Daniel Gregory via MSA-talk msa-talk@minlists.org
Reply-To: Daniel Gregory daniel.gregory@ucr.edu
To: msa-talk@minlists.org

Hi everyone,

I am planning on doing some experiments using Marcasite but have been
having a difficult time purchasing marcasite that doesn't turn out to be
pyrite. Please let me know if you know a good source of marcasite.

Thanks,
Dan

Dan,
Yes, much of what has been called marcasite is actually pyrite as Klaus mentioned.  Even much or the coarsely crystalline “marcasite” from Nanisivik has inverted to pyrite.  Good marcasite for research should be coarse crystals, and material from Rennselaer, IN, MVT Pb-Zn deposits such as the Tri-State district (especially Baxter Springs, KS), and some material from Nanasivik.  Klaus mentioned Excaliber Minerals, and if their material has been confirmed as marcasite by XRD, then you are all set.  If you need a small amount (not kg), let me know—I have some xls from Rennselaer, and cockscomb xls from Baxter Springs, KS I can probably part with.

Jim
James Murowchick, Ph.D.
Professor Emeritus
Department of Earth & Environmental Sciences
University of Missouri-Kansas City
420 Flarsheim Hall
5110 Rockhill Rd
Kansas City, MO 64110
murowchickj@umkc.edu

From: Daniel Gregory via MSA-talk msa-talk@minlists.org
Date: Thursday, August 5, 2021 at 10:57 AM
To: msa-talk@minlists.org msa-talk@minlists.org
Subject: [MSA-talk] Marcasite
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Hi everyone,

I am planning on doing some experiments using Marcasite but have been having a difficult time purchasing marcasite that doesn't turn out to be pyrite. Please let me know if you know a good source of marcasite.

Thanks,
Dan