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what is this rock?

0 votes

scratches my nail, seems to be sedimentary with fine grains. grayish color with no crystals. looks like there may have once been rings

asked Jul 11 by Caeynn (120 points)

1 Answer

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Looks like a geode. May contain any type of mineral carried in solution inside the husk of this rock. Resembles mostly fine sediment that has cemented itself inside. Like silt or alluvial flow forming a concretion.
answered Jul 12 by Weasel (51,230 points)

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