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![ is this a fossil? theres only 2 visible material in it. the white one that was been coated by the greenish substance. some parts appear brown because of the thin layered coating of the green blended by the white inside. its tough and hard but feels like greasy. there are a crack line in it that goes around elongated that seems once it was split open but managed itself to stick back together. i wonder what this was. i never seen a rock like this my whole life. the white part is like chalk.. its quite heavy and i think been compressed for so long. i found it in a top of a hill several feet from the ground. and it is the only stone different from there. its located here in the philippines. anyone interested? ]

(https://i.stack.imgur.com/3cFcd.jpg)

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closed as off-topic by Universal_learner, Fred, trond hansen, Ash, arkaia Jun 23 at 18:41

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  • "Please review our rock identification guidelines to provide the missing information so that your question is both answerable and useful to new users." – Universal_learner, Fred, trond hansen, Ash, arkaia
If this question can be reworded to fit the rules in the help center, please edit the question.

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This is no fossil. It's a piece of nicely rounded flint.

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  • $\begingroup$ I agree but generally you should try to include how you came to your conclusion. $\endgroup$ – John Jun 22 at 13:33
  • $\begingroup$ Sorry, I was just online with my mobile phone... The heavy weight, the layering, and the texture which you describe as greasy point towards flint. As flint is quartz, you can check if you can scratch glass with it. If yes - it's quartz. If no - it's probably something else. Latter would require further information about the find location and the properties of the stone itself. $\endgroup$ – JulPal Jun 22 at 16:12

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