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2,144 questions

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17,547 users

Pl identify this Rock, very hard scretch glass easily

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asked Sep 30, 2017 by santoshmlokhande (830 points)

1 Answer

0 votes
The bottom one I am considering to be, maybe obsidian, volcanic glass. Serpentine is a possibility
answered Sep 30, 2017 by Weasel (55,650 points)
Thanks Sir,
What is about first one, it shows some grinish shades , this is also very hard or else suggest any test on it