bunnyfights
noticing nice landscape pebbles
Member since May 2022
Posts: 88
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Post by bunnyfights on Aug 12, 2022 11:16:07 GMT -5
Hi all, One more Southern Wisconsin find. Hardness - 7+ Feel is waxy The yellow-orange looks agateish I cut the end off for ID purposes but plan on cutting slabs of this one over the next week. As it stands does this look like an agate?
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,019
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Post by gemfeller on Aug 12, 2022 18:26:08 GMT -5
Both stones you've posted look more like jaspers than agates to me. The classic definition of agate is that it must be banded. That definiton gets stretched a lot in common usage, considering moss, plumes, dendrites etc.. Most "agates" collected by rockhounds are actually jasper-agate mixtures, which yours may be. I'd like to see a slab when you cut some.
Another definition says agates are transparent to translucent while other chalcedony-based materials like jasper, chert and flint are generally opaque. But agate or jasper, your stones should cut pretty cabs.
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Post by rmf on Aug 12, 2022 19:06:18 GMT -5
bunnyfights Based on the structure of image #2 I would call it and agate replacement of Bryozoans. It may be coral but the structure looks like Bryozoan. Maybe some magnification with a hand lens or microscope would answer that question.
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bunnyfights
noticing nice landscape pebbles
Member since May 2022
Posts: 88
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Post by bunnyfights on Aug 15, 2022 14:10:33 GMT -5
Not sure on the source, but this looks to be Jasper based on the slabs lack of translucence.
Going to look more into structure. To be continued...
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