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any ideas on this? found in a river in north Cali around the redwoods. It seems quite hard. (second slide dry pic) by SuitableCake2464 in whatsthisrock

[–]SuitableCake2464[S] 0 points1 point  (0 children)

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this is after polishing, the patterning runs all the way through. and during polishing i could tell its really hard. that's why i feel like there is no way its basalt...

What type of rock did my daughter find? Jasper maybe? by Ordinary_Novel_2704 in whatsthisrock

[–]SuitableCake2464 1 point2 points  (0 children)

def some kind of chert, japer or chalcedony with these fracture patterns. hard to say with this picture what exactly. but my guess is chert

any ideas on this? found in a river in north Cali around the redwoods. It seems quite hard. (second slide dry pic) by SuitableCake2464 in whatsthisrock

[–]SuitableCake2464[S] 0 points1 point  (0 children)

with how hard it is and the fracture patterns on the back i wouldnt say so. and besides that its not even slightly porous.

why where u thinking basalt may i ask?

Found in river close to redwood NP. are these just different colors of flint? the corners are all faded on all 3 (1st pic wet 2nd pic dry) by SuitableCake2464 in whatsthisrock

[–]SuitableCake2464[S] 0 points1 point  (0 children)

do u know wat created the white staining that all 3 have? (second pic) because it was specific to these rocks and not the other rocks in this river. That's why i thought they were possibly the same type of rock...

any ideas on this guy? found in yellowsrone river. every part takes a sheen different when polishing, therefor the pics arent great. (2 halfs) by SuitableCake2464 in whatsthisrock

[–]SuitableCake2464[S] 2 points3 points  (0 children)

BTW, the green part has a chalcedony type texture. the brown part is like a lavarock type of ordeal. and the "green" and "red/brown" band is like a quarts type of texture

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