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Found 2 results

  1. I showed some of this material to a geologist and licensed gemologist to verify what it is, and he said most is agate in some form, and that a lot is petrified wood. I didn't know we had petrified wood up here. The longitudinal grain seems to be clearly defined, and gives a nice striped pattern. The cross-section cuts give sort of a cloud agate appearance. The large "logs" are in the softer stages. They are composed of powdered phyllite mixed in with sand and mica. The mohs hardness is about 3.5. The teal blue striped material in the video is an example. The quartz petrified wood is mohs 7 and quite brittle. Can anyone identify tree species? Chestnut was abundant at one time. Blue quartz w/ petrified wood (below) Grayson County, VA White Top Mountain Rhyolite: Petrified wood cross-cut on diameter: Petrified wood lengthwise cut on lower right: Petrified logs (some are soft): Watauga County, NC specimens:
  2. Hello! I recently visited a sea side town in England on vacation and found this interesting looking blue & white rock on the beach. It appears to be wood but I'm not an expert so I was wanting some validation help?
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