Colquiriite
A valid IMA mineral species
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About Colquiriite
Formula:
CaLi[AlF6]
Colour:
White
Hardness:
4
Specific Gravity:
2.94
Crystal System:
Trigonal
Name:
Named by K. Walenta, B. Lehmann, and M. Zwiener in 1980 for the type locality of Colquiri tin mine, Bolivia.
This page provides mineralogical data about Colquiriite.
Unique Identifiers
Mindat ID:
1111
Long-form identifier:
mindat:1:1:1111:8
IMA Classification of Colquiriite
Approved
IMA Formula:
CaLiAlF6
Approval year:
1980
First published:
1980
Classification of Colquiriite
3.CB.20
3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
11.6.3.1
11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
8.6.16
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
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 for Standard |
|---|---|---|
| Cqr | 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 Colquiriite
Transparency:
Transparent, Translucent
Colour:
White
Hardness:
4 on Mohs scale
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
2.94 g/cm3 (Measured)
Optical Data of Colquiriite
Type:
Uniaxial (-)
RI values:
nω = 1.388(2) nε = 1.385(2)
Max. Birefringence:
δ = 0.003
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Chemistry of Colquiriite
Mindat Formula:
CaLi[AlF6]
Element Weights:
Elements listed:
Crystallography of Colquiriite
Crystal System:
Trigonal
Cell Parameters:
a = 5.02 Å, c = 9.67 Å
Ratio:
a:c = 1 : 1.926
Unit Cell V:
211.04 ų (Calculated from Unit Cell)
Z:
2
Comment:
Point Group: 3 2/m or 3m.; Space Group: P31c or P31c (synthetic).
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) |
|---|---|---|---|---|---|---|---|
| 0012341 | Colquiriite | Bolotina N B, Maksimov B A, Simonov V I, Derzhavin S I, Uvarova T V, Apollonov V V (1993) Atomic structure and spectral properties of LiCaAlF6:Cr3+ single crystals Crystallography Reports 38 446-450 | 1993 | synthetic | 0 | 293 | |
| 0012340 | Colquiriite | Bolotina N B, Maksimov B A, Simonov V I, Derzhavin S I, Uvarova T V, Apollonov V V (1993) Atomic structure and spectral properties of LiCaAlF6:Cr3+ single crystals Crystallography Reports 38 446-450 | 1993 | synthetic | 0 | 293 | |
| 0015777 | Colquiriite | Viebahn W (1971) Untersuchungen an quaternaren fluoriden LiMeIIMeIIIF6 die struktur von LiCaAlF6 Zeitschrift fur Anorganische und Allgemeine Chemie 386 335-339 | 1971 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.23 Å | (10) |
| 2.22 Å | (9) |
| 1.736 Å | (8) |
| 3.98 Å | (7) |
| 1.446 Å | (6) |
| 1.978 Å | (5) |
| 1.552 Å | (5) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Colquiriite
General Appearance of Type Material:
Anhedral grains to 1 cm.
Ralstonite appears to replace colquiriite and gearksutite is present as veinlets so that colquiriite appears to be the oldest.
Ralstonite appears to replace colquiriite and gearksutite is present as veinlets so that colquiriite appears to be the oldest.
Place of Conservation of Type Material:
Institute for Mineralogy and Crystallography, University of Stuttgart, Stuttgart, Germany.
Geological Setting of Type Material:
Tin mine.
Associated Minerals at Type Locality:
Synonyms of Colquiriite
Other Language Names for Colquiriite
Common Associates
Associations Based on Photo Data:
| 2 photos of Colquiriite associated with Phosphosiderite | FePO4 · 2H2O |
| 1 photo of Colquiriite associated with Bermanite | Mn2+Mn3+2(PO4)2(OH)2 · 4H2O |
Related Minerals - Strunz-mindat Grouping
| 3.CB.05 | Cryolithionite | Na3Al2(LiF4)3 |
| 3.CB.15 | Elpasolite | K2NaAlF6 |
| 3.CB.15 | Simmonsite | Na2LiAlF6 |
| 3.CB.15 | Cryolite | Na2NaAlF6 |
| 3.CB.25 | Leonardsenite | MgAlF5 · 2H2O |
| 3.CB.25 | Weberite | Na2Mg[AlF6]F |
| 3.CB.30 | Karasugite | SrCa[Al(F,OH)7] |
| 3.CB.35 | Usovite | Ba2CaMgAl2F14 |
| 3.CB.40 | Thomsenolite | NaCa[AlF6] · H2O |
| 3.CB.40 | Pachnolite | NaCa[AlF6] · H2O |
| 3.CB.45 | Carlhintzeite | Ca2[AlF6]F · H2O |
| 3.CB.50 | Yaroslavite | Ca3Al2F10(OH)2 · H2O |
| 3.CB.55 | Sbacchiite | Ca2AlF7 |
| 3.CB.60 | Verneite | Na2Ca3Al2F14 |
Fluorescence of Colquiriite
None
Other Information
Thermal Behaviour:
Structure breaks down between 800-900 C.
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 Colquiriite
mindat.org URL:
https://www.mindat.org/min-1111.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Colquiriite
Reference List:
Viebahn, Werner (1971) Untersuchungen an quaternären Fluoriden LiMeIIMeIIIF6 Die Struktur von LiCaAlF6. Zeitschrift für anorganische und allgemeine Chemie, 386 (3). 335-339 doi:10.1002/zaac.19713860311
Walenta, K., Lehmann, B., Zwiener, Martina (1980) Colquiriit, ein neues Fluoridmineral aus der Zinnlagerstätte von Colquiri in Bolivien. TMPM Tschermaks Mineralogische und Petrographische Mitteilungen, 27 (4). 275-281 doi:10.1007/bf01159266
Fleischer, Michael, Chao, George Y., Francis, Carl A. (1981) New Mineral Names. American Mineralogist, 66 (7-8) 878-879
Localities for Colquiriite
Showing 4 localities.
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.
Bolivia (TL) | |
| Walenta et al. (1980) |
Brazil | |
| Wegner et al. (1998) |
Russia | |
| Gamyanin et al. (2014) |
Spain | |
| Dill et al. (2023) |
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Serra Branca pegmatite, Pedra Lavrada, Paraíba, Brazil