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1,645 questions

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5,358 users

Minerals need identification

0 votes
  1. This white crystal ( Hardness < 7 ) Can't scratch Glass

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2.Yellow Crystal possibly Calcite ( Hardness < 7 ) Can't scratch Glass

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3.Looks like Quartz mixed with something metalic/greyish ( Hardness > 7 ) Both greyish/metalic and quartz like , can scratch Glass

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b)alt text

4.Looks like calcite too, it is shiny ( Hardness < 7 ) Can't scratch Glass

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5.Black rock mixed with something like white crystal i)White Part ( Hardness < 7 ) Can't scratch Glass ii)Black Part ( Hardness > 7 ) Can scratch Glass

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6.Again it could be calcite,it have crystal in the middle ( Hardness < 7 ) Can't scratch Glass

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7.Looks like quartz ( Hardness > 7 ) Can scratch Glass

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asked Apr 21, 2014 by Tagiadin John (2,070 points)

2 Answers

0 votes

Nr 3 might be chalcedone. Nr 1, 2, 4, 6 is/are calcite.

Nr 7; milky quartz.

Nr 5; calcite with ... could be tourmaline, but I don't see any angles or stripes on the black parts.

answered Apr 21, 2014 by Renata (7,820 points)
0 votes

Thanks for your help Renata

answered Apr 21, 2014 by Tagiadin John (2,070 points)

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