Henry
spending too much on rocks
Member since January 2013
Posts: 452
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Post by Henry on Jun 30, 2015 0:31:51 GMT -5
Hello everyone. I purchased this really nice slab of petrified wood with grayish-blue. My question is this:the unpolished side "sparkles" in sunlight. Isn't this indicative of quartzite? Quartzite can be a replacement rock? I thought it was sandstone before metamorphosing.
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Post by snowmom on Jun 30, 2015 4:45:08 GMT -5
silica replacement is part of the process of petrification/ silica infilling or replacing the wood fibers; quartz is silica, and some wear on the outside of the rock or some of the original soil(sand, etc) that surrounded the wood may have stuck to it as well. very pretty piece of pet wood!
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Henry
spending too much on rocks
Member since January 2013
Posts: 452
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Post by Henry on Jun 30, 2015 6:44:50 GMT -5
Thanks for the information Snowmom.
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Henry
spending too much on rocks
Member since January 2013
Posts: 452
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Post by Henry on Jun 30, 2015 6:45:10 GMT -5
Thanks for the information Snowmom.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,681
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Post by Fossilman on Jun 30, 2015 8:54:25 GMT -5
Very nice slab of wood-I like it...........SCORE!!
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