This rock is sort of a dark grey/black and kind of shiny but more matte I'd say. It does have some brown rust-like spots on it. And the inside has little dimples in a what seems to be more chalky white rock. Was found about 3 feet under ground when working and digging pipes up. It's got smooth sides all around it also.
closed as unclear what you're asking by Jan Doggen, daniel.neumann, Fred, Camilo Rada, bon Apr 10 '18 at 9:57
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