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MineralsSakhaite

6th Sep 2015 18:35 UTCŁukasz Kruszewski Expert

According to the current IMA list, sakhaite is chemically much more complex: Ca48Mg16Al(SiO3OH)4(CO3)16(BO3)28•(H2O)3(HCl)3.

6th Sep 2015 20:55 UTCPavel Kartashov Manager

Lukasz,

it is interesting, how do you imagine to yourself position and existence of neutral (HCl)3 group in sakhaite structure? ;-)

6th Sep 2015 21:11 UTCAlfredo Petrov Manager

Lukasz, that formula wouldn't be charge-balanced?

7th Sep 2015 09:49 UTCUwe Kolitsch Manager

Guys, why ask Lukasz?


O. V. Yakubovich, I. M. Still, P. G. Gavrilenko, and V. S. Urusov (2005): Crystal Structure of Sakhaite from the Solongo Deposit in Connection with the Crystallochemical Interpretation of the Sakhaite-Harkerite Mineral Series. Crystallography Reports 50, 194.

(R 0.047)


+


IMA2014_ABSTRACT VOLUME.pdf

The structure and crystal chemistry of harkerite and sakhaite

Evans R, Groat L, Grew E

7th Sep 2015 13:29 UTCPavel Kartashov Manager

There should be some error. I know how and where sakhaite grow - in carbonate rocks in direct association with calcite (in difference from harkerite).

I know also, that microprobe don't show you HCl, and that they didn't made wet chemical analysis, which really able to show that.

I will ask Yakubovich directly.
 
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