enter image description here

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.

Image of rock

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    $\begingroup$ Please see this page for information on how to ask rock identification questions. As it stands, there is not enough information here to provide a good answer. $\endgroup$ – bon Apr 25 '16 at 9:24
  • $\begingroup$ Did you actually read the page I linked. Photos are nice, but a thorough description is generally more useful. The page gives you some ideas about things you should include. $\endgroup$ – bon Apr 25 '16 at 18:53
  • $\begingroup$ How heavy is it (dense or light, use metal and other rocks for comparison) and where approximately was it found? It looks igneous by my first glance. $\endgroup$ – Michael Wallace Apr 25 '16 at 23:22
  • $\begingroup$ Try scratching the black part with the tip of a knife. If you can scratch it, what colour is the dust? $\endgroup$ – haresfur Apr 26 '16 at 0:19
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    $\begingroup$ Where did you find the rock? $\endgroup$ – Gary Kindel Jul 12 '16 at 23:49