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Post by orrum on Sept 19, 2015 5:32:10 GMT -5
Petosky? Chuck n Rob will know and chime in directly. Welcome to RTH!
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Post by Deleted on Sept 19, 2015 6:01:36 GMT -5
Might be a piece of the blow out from the meteorite strike or just some small quartz pieces in a sedimentary chert.
Others on here that live in that area are a lot more knowledgeable than I on that area and will pop up eventually. Jim
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Post by Jugglerguy on Sept 19, 2015 9:08:24 GMT -5
I'm no rock identification expert, so I can't help you. Nice Petoskey in the background though. I'm from up in Alpena. rattlehead lives in your part of the state. He might be able to help you. He picks up a lot of lightning stones, but I don't think that's what you have there.
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Post by snowmom on Oct 4, 2015 15:30:00 GMT -5
I think chert is likely too, the yellowed areas are remains of the limestone it formed in, some cherts can be highly translucent and beautiful, and were the favored rock for the native Americans to make tools of. PS, your pink Petoskey is awesome!
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Post by Deleted on Oct 16, 2015 0:35:23 GMT -5
#1 does a steel knife scratch it?
#2 does it react to muriatic acid?
#3 have you checked the specific gravity?
Looks quite grainy to me. Maybe a sandstone? Way to grainy to be a silicate.
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Post by snowmom on Oct 16, 2015 5:31:21 GMT -5
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Post by Deleted on Oct 19, 2015 10:00:47 GMT -5
Hydrochloride acid will test positively for "chalk" matrix.
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