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Identity HelpPyrolusite query.
2nd Nov 2015 15:43 UTCJay I. G. Roland
Regards,
Jay.
2nd Nov 2015 16:45 UTCDoug Schonewald
I was wondering the same thing. I recently collected some specimens that I was fairly certain were massive pyrolusite. Some are large pieces of almost entirely black mineral and others have smaller indistinct pieces throughout a quartz-type matrix. They are all exceedingly soft (around Mohs 3). When I looked it up on Mindat using physical properties it agrees that this is most likely pyrolusite based on hardness, color, streak, etc. etc. Then I went to the page and was surprised to see the hardness range. I am now rethinking whether this is pyrolusite or not.
Doug
2nd Nov 2015 18:57 UTCKnut Eldjarn 🌟 Manager
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 26, 2024 04:14:04