Galeite
A valid IMA mineral species
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About Galeite
William A. Gale
Formula:
Na15(SO4)5F4Cl
Colour:
Colorless
Specific Gravity:
2.605
Crystal System:
Trigonal
Name:
Named in 1955 by Adolf Pabst, Dwight L. Sawyer, Jr., and George S. Switzer in honor of William Alexander Gale (3 February 1898, Douro, Peterborough, Ontario, Canada – 4 March 1985, California, United States), Director of Research of the American Potash and Chemical Corporation.
Type Locality:
Forms polycrystals with schairerite in the type material.
Can be treated as a 5H antiperovskite polytype, while schairerite - a 7H one.
Can be treated as a 5H antiperovskite polytype, while schairerite - a 7H one.
Unique Identifiers
Mindat ID:
1640
Long-form identifier:
mindat:1:1:1640:3
Similar Names
IMA Classification of Galeite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na15(SO4)5ClF4
First published:
1955
Classification of Galeite
7.BD.10
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
30.1.8.1
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p>2:1
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p>2:1
26.4
26 : Sulphates with Halide
26 : Sulphates with Halide
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Gle | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Galeite
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Density:
2.605(5) g/cm3 (Measured) 2.596 g/cm3 (Calculated)
Comment:
Calculated density from Fanfani et al. (1975).
Optical Data of Galeite
Type:
Uniaxial (+)
RI values:
nω = 1.447(2) nε = 1.449(2)
Birefringence:
Very low.
Max. Birefringence:
δ = 0.002
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Chemistry of Galeite
Mindat Formula:
Na15(SO4)5F4Cl
Element Weights:
Crystallography of Galeite
Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3 1m
Cell Parameters:
a = 12.197(4) Å, c = 13.955(10) Å
Ratio:
a:c = 1 : 1.144
Unit Cell V:
1,797.90 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Barrel-shapaed crystals. Forms include {1121}, {2111}, {0001}, {1120}.
Comment:
Cell parameters from Fanfani et al. (1975); complexity: 695.175 bits/cell
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014464 | Galeite | Fanfani L, Nunzi A, Zanazzi P F, Zanzari A R (1975) The crystal structure of galeite, Na15(SO4)5F4Cl Mineralogical Magazine 40 357-361 |  | 1975 | Searles Lake, California, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.79 Å | (100) |
| 3.52 Å | (80) |
| 3.68 Å | (70) |
| 2.55 Å | (70) |
| 2.97 Å | (60) |
| 1.758 Å | (60) |
| 3.04 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 21 : Chemically precipitated carbonate, phosphate, iron formations | |
| 25 : Evaporites (prebiotic) |
Type Occurrence of Galeite
General Appearance of Type Material:
Small nodular aggregates of minute white crystals, embedded in clay and other salt minerals. Crystals to about 1 mm. Hexagonal, barrel-shaped, rarely tabular.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 107385.
Geological Setting of Type Material:
Drill core from an evaporite deposit.
Associated Minerals at Type Locality:
Other Language Names for Galeite
Related Minerals - Strunz-mindat Grouping
| 7.BD. | Hasanovite | KNa(MoO2)(SO4)2 |
| 7.BD. | Kennygayite | [Pb4O2(OH)2](SO4) |
| 7.BD. | Adanite | Pb2(Te4+O3)(SO4) |
| 7.BD. | Cadsulfohite | Cd2(SO4)(OH)2 |
| 7.BD. | Hyblerite | Pb4Bi2(SO4)2(CO3)O4 |
| 7.BD. | Zanelliite | PbCu9[AsO3.5(OH)0.5]2(AsO4)2(OH)9(H2O)3 |
| 7.BD. | Evanichite | Pb6Cr3+(Cr6+O4)2(SO4)(OH)7FCl |
| 7.BD.05 | Sulphohalite | Na6(SO4)2FCl |
| 7.BD.10 | Schairerite | Na21(SO4)7ClF6 |
| 7.BD.15 | Kogarkoite | Na3(SO4)F |
| 7.BD.20 | Aiolosite | Na4Bi(SO4)3Cl |
| 7.BD.20 | Caracolite | Na3Pb2(SO4)3Cl |
| 7.BD.20 | Cesanite | Na3Ca2(SO4)3(OH) |
| 7.BD.25 | Burkeite | Na6(CO3)(SO4)2 |
| 7.BD.30 | Hanksite | Na22K(SO4)9(CO3)2Cl |
| 7.BD.35 | Cannonite | Bi2(SO4)O(OH)2 |
| 7.BD.40 | Lanarkite | Pb2(SO4)O |
| 7.BD.45 | Grandreefite | Pb2(SO4)F2 |
| 7.BD.50 | Itoite | Pb3Ge4+(SO4)2O2(OH)2 |
| 7.BD.55 | Chiluite | Bi3Te6+Mo6+O10.5 |
| 7.BD.60 | Hectorfloresite | Na9(SO4)4(IO3) |
| 7.BD.65 | Pseudograndreefite | Pb6(SO4)F10 |
| 7.BD.70 | Sundiusite | Pb10(SO4)O8Cl2 |
Other Information
Thermal Behaviour:
stable up to 600
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Galeite
mindat.org URL:
https://www.mindat.org/min-1640.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Galeite
Reference List:
Pabst, A., Sawyer, D. L., Switzer, George (1963) Galeite and related phases in the system Na2SO4-NaF-NaCl. American Mineralogist, 48 (5-6) 485-510
IMA (1967) International Mineralogical Association: Commission on New Minerals and Mineral Names. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (277) 131-136 doi:10.1180/minmag.1967.036.277.20
Brown, F. H., Pabst, A. (1971) New data on galeite and schairerite. American Mineralogist, 56 (1-2) 174-178
Fanfani, L., Nunzi, A., Zanazzi, P. F., Zanzari, A. R. (1975) The crystal structure of galeite, Na15(SO4)5F4Cl. Mineralogical Magazine, 40 (312) 357-361 doi:10.1180/minmag.1975.040.312.04
Avdontceva, Margarita S., Zolotarev, Andrey A., Shablinskii, Andrey P., Bocharov, Vladimir N., Kasatkin, Anatoly V., Krivovichev, Sergey V. (2023) Galeite, Na15(SO4)5ClF4, and Schairerite, Na21(SO4)7ClF6: Phase Transitions, Thermal Expansion and Thermal Stability. Symmetry, 15 (10). 1871 doi:10.3390/sym15101871
Localities for Galeite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Iceland | |
| Jakobsson et al. (1992) |
| JAKOBSSON et al. (1986) +1 other reference | |
Japan | |
| Oskarsson (1981) +1 other reference |
| Africano et al. (2000) | |
USA (TL) | |
| Pabst et al. (1955) +5 other references |
Searles Lake, San Bernardino County, California, USA