Sulphohalite Mineral Data + 
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- 30.1.7.1 Sulphohalite Na6(SO4)2FCl F m3m 4/m 3 2/m
- VI/B.12-10 Sulphohalite Na6(SO4)2FCl F m3m 4/m 3 2/m
- VI/B.12-20 Galeite Na15(SO4)5F4Cl P 3m 3m
- VI/B.12-30 Schairerite Na21(SO4)7F6Cl P 31m 3m
- VI/B.12-40 Kogarkoite Na3(SO4)F Unk (pseudo HEX-R) Mono
- VI/B.12-50 Cesanite Na7Ca3(SO4)6(OH)·0.8(H2O) P 6 6
- VI/B.12-60 Caracolite Na3Pb2(SO4)3Cl P 21/m 2/m
General Sulphohalite Information |
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 Chemical Formula: |
Na6(SO4)2FCl | ||
| Composition: |
Molecular Weight = 384.52 gm | ||
| Sodium 35.87 % Na 48.36 % Na2O | |||
| Sulfur 16.68 % S 41.64 % SO3 | |||
| Chlorine 9.22 % Cl 9.22 % Cl | |||
| - % Cl -2.08 % -O=Cl2 | |||
| Oxygen 33.29 % O | |||
| Fluorine 4.94 % F 4.94 % F | |||
| - % F -2.08 % -O=F2 | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Na6(SO4)2FCl | ||
| Environment: |
Continental evaporite deposits. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1888 | ||
| Locality: |
Searles Lake, San Bernardino Co., California. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after its composition of sulfate plus NaCl (halite). . | ||
Sulphohalite Image | |||
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Images:
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Sulphohalite Crystallography |
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| Cell Dimensions: |
a = 10.065, Z = 4; V = 1,019.63 Den(Calc)= 2.50 | ||
| Crystal System: |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.56(1), 2.91(0.8), 1.779(0.65), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Sulphohalite |
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| Cleavage: |
[???] Perfect | ||
| Color: |
Colorless, Green yellow, Gray, Grayish yellow, Light green yellow. | ||
| Density: |
2.43 | ||
| Diaphaniety: |
Transparent | ||
| Fracture: |
Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces. | ||
| Habit: |
Octahedral Crystals - Occurs as octahedral shaped crystals. | ||
| Hardness: |
3.5 - Copper Penny | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Vitreous - Greasy | ||
| Magnetism: |
Nonmagnetic | ||
| Streak: |
white | ||
Optical Properties of Sulphohalite |
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| Gladstone-Dale: |
CI meas= 0.05 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.076 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.182,KPDmeas= 0.1872,KC= 0.197 |
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| Optical Data: |
Isotropic, n=1.455. | ||
Calculated Properties of Sulphohalite |
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| Electron Density: |
relectron=2.38 gm/cc |
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| Fermion Index |
Fermion Index = 0.00141 Boson Index = 0.99859 |
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| Photoelectric: |
PESulphohalite = 2.20 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Sulphohalite is Not Radioactive |
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Sulphohalite Classification |
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| Dana Class: |
30.1.7.1 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen | ||
| (30.1)where (A B)m (XO4)p Zq where m:p>2:1 | |||
| (30.1.7)Dana Group | |||
| Strunz Class: |
VI/B.12-10 VI - Sulfates,Chromates,Molybdates and Tungstates | ||
| VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations | |||
| VI/B.12 - Sulphohalite - Caracolite series | |||
Other Sulphohalite Information |
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| References: |
NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Sulphohalite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas Search for Sulphohalite using: Visit our Advertisers for Sulphohalite : Translate Sulphohalite Mineral Data : Ask about Sulphohalite here : Print or Cut-and-Paste your Sulphohalite Specimen Label here :
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