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Identity HelpWhat is the dark green gemmy material in the center of the specimen?
3rd Jul 2012 01:36 UTCAnonymous User
I found what I think is a Serpentine specimen a couple years ago - gemmy side down in the Rock River, downstream from the Adams Hill Nickel prospect, in southeastern Vermont. It happened to be a sunny day and I knew I had something of some significance, at least to me. So I decided to polish it with my orbital sander, working my way up with finer grits and then some automotive chrome polish. I know there is asbestos present in serpentine, so I took proper safety precautions. My question is: what is the gem-like material in the center of the specimen - when tilted, different structures (or bands) are highlighted depending on the angle of tilt - a "holographic" effect is produced. Thanks for your help:-D
3rd Jul 2012 05:05 UTCD Mike Reinke
Can we get a larger picture, and maybe several angles? I think that would generate more responses.
Thanks.
3rd Jul 2012 22:14 UTCAnonymous User
4th Jul 2012 00:07 UTCPaul Brandes 🌟 Manager
Have you conducted any sort of diagnostic testing yet such as hardness, streak, specific gravity, etc...? That might also give you (and us) a better idea of what you have. My initial thought is that if you used an orbital grinder to polish it, it is likely harder than just serpentine alone but is a metamorphic rock called serpentinite, which contains serpentine minerals.
6th Jul 2012 01:21 UTCAnonymous User
6th Jul 2012 11:56 UTCPeter Haas
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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 18, 2024 15:17:48