rockstock
spending too much on rocks
Member since April 2019
Posts: 472
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Post by rockstock on Oct 6, 2019 11:31:18 GMT -5
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Oct 6, 2019 13:33:45 GMT -5
Cannot see any clear crystal faces, but going from the color, olivine or vesuvianite are possibilities. Doing scratch tests can help narrow down what it is.
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Post by fernwood on Oct 6, 2019 14:05:53 GMT -5
I have found veins of Olivine in Chalcedony in Wisconsin. Looks similar to this.
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rockstock
spending too much on rocks
Member since April 2019
Posts: 472
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Post by rockstock on Oct 6, 2019 14:11:56 GMT -5
Thank you! If it is more transparent or clear crystal faces then it's peridot? Less clear or smoky/solid color then olivine?
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fuss
spending too much on rocks
Member since October 2018
Posts: 250
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Post by fuss on Oct 6, 2019 22:40:06 GMT -5
That's a chert rock (sedimentary) which can come in a variety of colors from different impurities. Olivine/Peridot is found in mafic/ultramafic igneous rocks like baslat, Gabbro etc..
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Post by rmf on Oct 22, 2019 4:17:14 GMT -5
What fuss said. That is chert in a nodule
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