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Identity HelpCan anyone identify these pieces.
18th May 2012 01:00 UTCCheryl Hurst
18th May 2012 09:05 UTCRock Currier Expert
18th May 2012 10:55 UTCSpencer Ivan Mather
Spencer
18th May 2012 18:21 UTCCheryl Hurst
18th May 2012 19:41 UTCPaul Brandes 🌟 Manager
18th May 2012 20:13 UTCAnonymous User
18th May 2012 22:47 UTCCheryl Hurst
18th May 2012 23:57 UTCAnonymous User
19th May 2012 02:07 UTCKeith A. Peregrine
By the way, where is the thrift store located? If in northern or even central Illinois, then a Mazon Creek source is possible.
19th May 2012 02:27 UTCJim Bean 🌟
19th May 2012 02:31 UTCCheryl Hurst
19th May 2012 03:33 UTCCheryl Hurst
19th May 2012 12:32 UTCD Mike Reinke
Speculating on the origin of those pieces is amusing.
I suppose if you were really curious about their identity, you could weigh them, and get the volume. (Of a cube, that is pretty easy.) Compare that to a same size block of pure plastic (anybody out there know the specific gravity of lucite?) And you would at least know whether yours are somewhat lighter, then they'd probably be coal. Dark rocks, like amphiboles, have an SG of maybe 3. That may be a little more than the plastic, I'm not sure.
Either way, your reason for keeping them is priceless.
Thanks for sharing!
19th May 2012 18:38 UTCGeorge Eric Stanley Curtis
It's just a passing thought, but most lumps of coal do not have visible pyrite in them. Pyrite produces sulphur fumes when burned, and I remember as a child with a coal fire in our front room, the fumes can be choking.
So it occurs to me that somebody may have preserved these lumps for the pyrite, rather than the coal.
To some people pyrite (fool's gold) is very attractive, but it soon tarnishes or gets dirty with coal dust, unless preserved as yours are.
As I say, just a thought, it might be the pyrite that was preserved, the coal was just the matrix.
It would be fascinating if you could trace their origin, and find out just why somebody went to all that trouble.:-S
Regards
Eric
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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 01:04:25