Sanderiet

Sanderiet
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Formule	MgSO₄.2H₂O
Nickel-Strunz (10)	7.CB.07
Digtheid	2,23 g/cm³^[1]
Optiese eienskappe
Kristallografie
Kristalsisteem	ortorombies^[1]
Ruimtegroep	P2₁2₁2₁
Nommer	15
Eenheidsel	a = 889,3 pm, b = 848,8 pm, c = 1244,0 pm,
* Lys van minerale
Portaal Geologie

Sanderiet is 'n evaporitiese mineraal met formule MgSO₄.2H₂O. Dis een van die hidrate van magnesiumsulfaat en is waarskynlik 'n metastabiele fase^[2], maar dit word in Wathlingen naby Celle in Duitsland in die potasmyn aangetref.^[1]

Kristalstruktuur

Sanderiet kristalliseer in 'n ortorombiese kristalstruktuur. Die sulfaatione is tetraëdries en die magnesiumione word omring deur vier sulfaatsuurstofatome en twee van water. Die Mg-O-afstande verskil effens: 208 pm en 211 pm. Die verwronge [MgO₄(H₂O)₂]-oktaëders deel hoeke. ^[3]

Verwysings

↑ ^1,0 ^1,1 ^1,2 "mindat 3519" (in Engels). Besoek op 23 Augustus 2023.
↑ Klaus-Dieter Grevel, Juraj Majzlan (2009). "Internally consistent thermodynamic data for magnesium sulfate hydrates". Geochimica et Cosmochimica Acta. 73=issue=22: 6805–6815. doi:10.1016/j.gca.2009.08.005.
↑ Ma, Hongwei, Bish, David L., Wang, Hsiu-Wen and Chipera, Steve J.. "Letter. (2009). "Determination of the crystal structure of sanderite, MgSO4·2H2O, by X-ray powder diffraction and the charge flipping method"". American Mineralogist. 94 (4): 622–625. doi:10.2138/am.2009.3110.

[mindat-1] 1,0 ^1,1 ^1,2 "mindat 3519" (in Engels). Besoek op 23 Augustus 2023.

[2] Klaus-Dieter Grevel, Juraj Majzlan (2009). "Internally consistent thermodynamic data for magnesium sulfate hydrates". Geochimica et Cosmochimica Acta. 73=issue=22: 6805–6815. doi:10.1016/j.gca.2009.08.005.

[3] Ma, Hongwei, Bish, David L., Wang, Hsiu-Wen and Chipera, Steve J.. "Letter. (2009). "Determination of the crystal structure of sanderite, MgSO4·2H2O, by X-ray powder diffraction and the charge flipping method"". American Mineralogist. 94 (4): 622–625. doi:10.2138/am.2009.3110.

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