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Unnamed (Ba Thiosulphate Fluoride)

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Formula:
Ba
 
2
F
 
2
(S
6+
 
O
 
3
S
2-
 
)
System:Monoclinic


Anthropogenic phase found in slag.
The crystal structure (Kampf, 2009) resembles that of grandreefite.

Classification of Unnamed (Ba Thiosulphate Fluoride)

IMA status:Not Approved
mindat.org URL:http://www.mindat.org/min-39573.html
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Crystallography of Unnamed (Ba Thiosulphate Fluoride)

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 15.3172(5) Å, b = 4.5898(1) Å, c = 4.6320(2) Å
β = 101.449(1)°
Ratio:a:b:c = 3.337 : 1 : 1.009
Unit Cell Volume:V 319.17 ų
Twinning:Often twinned.
Comment:SG C2/m

Chemical Properties of Unnamed (Ba Thiosulphate Fluoride)

Formula:
Ba
 
2
F
 
2
(S
6+
 
O
 
3
S
2-
 
)
Idealised Formula:
Ba
 
2
F
 
2
(S
 
2
O
 
3
)
Essential elements:Ba, F, O, S
All elements listed in formula:Ba, F, O, S

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Unnamed (Ba Thiosulphate Fluoride)

Reference List:

- +
Braithwaite, R.S.W., Kampf, A.R., Pritchard, R.G., Lamb, R.P.H. (1993): The occurrence of thiosulfates and other unstable sulfur species as natural weathering products of old smelting slags. Mineralogy and Petrology, 47, 255-261.

Kampf, A.R. (2009): The crystal structure of Ba2F2(S6+O3S2-), a natural thiosulphate weathering product of old smelting slags at the Surrender Mill, Yorkshire, UK. Mineralogical Magazine 73, 251-255.

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