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Showing results for tags 'spheres'.
Found 3 results
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I collected several of these small round balls in limestone (shale?) from the Eocene Green River Formation. The location is Tucker, Spanish Fork Canyon, Utah. The diameter is about 13mm, about the width of my small fingernail. When these are broken open, I see that the sphere is packed with 0.2mm white "crystals". I say "crystals" because they look like calcite to me and some have small (0.05mm) hollow spaces. The crystal density is least in the center of the sphere. FYI, the limestone does show small amounts of black organic fragments. In the field, these look very much like a fossil, but under the microscope, the cross-section looks like it is geological in origin. Any ideas?
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These ended up on my desk the other day. It seems like I recall some posts here on the ID forum with similar objects. Thought I'd post this here for future reference.
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- atlanta water works
- marble
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Whilst going through a box of stuff today i ran into these. I bought these many many years ago. My guess is that they are some kind of jasper? I really dont know. Not a clue where they are from either. any help is appreciated. Thanks everyone. RB
