Rocks and Minerals Question Marathon

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Re: Rocks and Minerals Question Marathon

Post by tornado guy » March 13th, 2012, 5:13 pm

topaz, Al2SiO4(F,OH)2, hardness 8
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Re: Rocks and Minerals Question Marathon

Post by HannahD413 » March 13th, 2012, 5:25 pm

Nope

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Re: Rocks and Minerals Question Marathon

Post by PacificGoldenPlover » March 13th, 2012, 5:50 pm

Beryl, hardness 8, formula Be3Al2(SiO3)6?
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Re: Rocks and Minerals Question Marathon

Post by Wadhk » March 13th, 2012, 6:22 pm

If not that then
apatite Hardness 5, Formula Ca5(PO4)3(F,Cl,OH)
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Re: Rocks and Minerals Question Marathon

Post by HannahD413 » March 13th, 2012, 6:32 pm

Wadhk wrote:If not that then
apatite Hardness 5, Formula Ca5(PO4)3(F,Cl,OH)
Wadhk has got it.

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Re: Rocks and Minerals Question Marathon

Post by Wadhk » March 13th, 2012, 7:35 pm

Image
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Re: Rocks and Minerals Question Marathon

Post by HannahD413 » March 14th, 2012, 3:07 pm

Milky quartz

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Re: Rocks and Minerals Question Marathon

Post by Wadhk » March 14th, 2012, 6:32 pm

Yup. Your turn.
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Re: Rocks and Minerals Question Marathon

Post by HannahD413 » March 16th, 2012, 2:29 pm

[img]http://skywalker.cochise.edu/wellerr/mineral/galena/6galena4837.JPG[/img]

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Re: Rocks and Minerals Question Marathon

Post by hexagonaria » March 16th, 2012, 2:42 pm

galena
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