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Post by greensbororocks on May 24, 2010 17:58:20 GMT -5
I don't think it is terra cotta. Quartz can barely scratch it, but if I rub the two together vigorously a red powder is formed. A white powder forms when I just do a simple scratch test. Any ideas? I tried to include a pic of a piece of brick to show what it is not. Attachments:
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Post by greensbororocks on May 24, 2010 17:58:57 GMT -5
brick Attachments:
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MikeS
fully equipped rock polisher
Member since January 2009
Posts: 1,081
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Post by MikeS on May 24, 2010 20:15:49 GMT -5
looks like maybe some kind of chert...just a guess
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rock
having dreams about rocks
Metamorphosed Mind
Member since June 2007
Posts: 62
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Post by rock on May 27, 2010 0:09:07 GMT -5
when I find that stuff I call it jasper. But it may be jasp-agate or chert or something else entirely...
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Post by Hard Rock Cafe on May 27, 2010 6:58:04 GMT -5
It looks like a fine grained red quartzite to me.
Chuck
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rock
having dreams about rocks
Metamorphosed Mind
Member since June 2007
Posts: 62
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Post by rock on May 27, 2010 9:40:13 GMT -5
Hey greensbororocks, I just noticed we're both new! I was also wondering if you're from Greensboro Vermont or NC as I'm from Vermont and have found stones like that in Greensboro vt, all tho rarely as i don't get up to Greensboro too often. I'm in Hyde Park.
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Post by greensbororocks on May 27, 2010 10:48:45 GMT -5
I am in NC. Too bad. I'll post a pic of that same rock later today after being in the vibe for 12 hours.
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rock
having dreams about rocks
Metamorphosed Mind
Member since June 2007
Posts: 62
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Post by rock on May 27, 2010 11:38:11 GMT -5
Well it's an amazing coincidence then as it is a rare rock here! BTW In Dana's mineralogy it says true jasper is "perfectly opaque to the smallest chip", but I don't know if that helps at all.
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Post by greensbororocks on May 27, 2010 11:46:33 GMT -5
trust me it is rare here too. I just hope it is not a real nice piece of terra cotta.
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Post by greensbororocks on May 27, 2010 15:20:12 GMT -5
After 12 hours of UV-10 abuse. Attachments:
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