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Carlhintzeite

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Carl Adolf Ferdinand Hintze
Formula:
Ca2[AlF6]F · H2O
System:
Triclinic
Colour:
Colorless
Lustre:
Sub-Vitreous
Name:
Named in 1979 by Pete J. Dunn, Donald R. Peacor, and B. Darko Sturman in honor of Dr. Carl Adolf Ferdinand Hintze [August 17, 1851 Breslau, Germany {Wrocław, Poland} - December 28, 1916 Breslau, Germany {Wrocław, Poland}], Professor of Mineralogy and director of the Mineralogische Instituts, Univerity of Breslau, Breslau, Germany {Wrocław, Poland}. Hintze was acclaimed for his compilation of the famous systematic Handbuch der Mineralogie and particularly for its comprehensive listing of mineral localities.
This page provides mineralogical data about Carlhintzeite.

Classification of Carlhintzeite

Approved
3.CB.45

3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
11.6.7.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
8.6.15

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
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Type Occurrence of Carlhintzeite

General Appearance of Type Material:
Small white bladed crystals in open radial clusters
Year of Discovery:
1979
Geological Setting of Type Material:
Late-stage phosphate mineralization in granite pegmatite
Associated Minerals at Type Locality:

Physical Properties of Carlhintzeite

Sub-Vitreous
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Colorless
Streak:
White
Tenacity:
Brittle
Cleavage:
None Observed
Density:
2.86 g/cm3 (Measured)    2.89 g/cm3 (Calculated)

Crystallography of Carlhintzeite

Crystal System:
Triclinic
Cell Parameters:
a = 9.485Å, b = 6.983Å, c = 9.305Å
α = 91.14°, β = 104.85°, γ = 90.0°
Ratio:
a:b:c = 1.358 : 1 : 1.333
Z:
4
Morphology:
Bladed crystals with {100}, {001}, and {110}. Elongated parallel to {110} and flattened 0n {001}.
Twinning:
Always twinned by rotation on {101}
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.56 (70)
3.69 (60)
3.48 (100)
2.852 (40)
2.277 (30)
2.242 (30)
1.460 (40)

Optical Data of Carlhintzeite

Type:
Biaxial (+)
RI values:
nα = 1.411 nβ = 1.416 nγ = 1.422
2V:
Measured: 77° , Calculated: 78° to 86°
Birefringence:
0.011
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v
Optical Extinction:
X ~ b, Z^c = 10°
Pleochroism:
Non-pleochroic

Chemical Properties of Carlhintzeite

Formula:
Ca2[AlF6]F · H2O
Essential elements:
All elements listed in formula:

Relationship of Carlhintzeite to other Species

3.CB.05CryolithioniteNa3Li3[AlF6]2
3.CB.15CryoliteNa3[AlF6]
3.CB.15ElpasoliteNaK2[AlF6]
3.CB.15SimmonsiteNa2Li[AlF6]
3.CB.20ColquiriiteCaLi[AlF6]
3.CB.25WeberiteNa2Mg[AlF6]F
3.CB.30KarasugiteSrCa[Al(F,OH)7]
3.CB.35UsoviteBa2CaMgAl2F14
3.CB.40PachnoliteNaCa[AlF6] · H2O
3.CB.40ThomsenoliteNaCa[AlF6] · H2O
3.CB.50YaroslaviteCa3Al2F10(OH)2 · H2O
8.6.1ZharchikhiteAlF(OH)2
8.6.2ChloraluminiteAlCl3 · 6H2O
8.6.3CadwaladeriteAlCl(OH)2 · 4H2O
8.6.4CryolithioniteNa3Li3[AlF6]2
8.6.5CryoliteNa3[AlF6]
8.6.6ChioliteNa5Al3F14
8.6.7ElpasoliteNaK2[AlF6]
8.6.8WeberiteNa2Mg[AlF6]F
8.6.9RalstoniteNaMg[Al(F,OH)6] · H2O
8.6.10KoeneniteNa4Mg9Al4Cl12(OH)22
8.6.11 Chlor-manasseiteMgxAl(OH)2x+2Cl · (x-0.8)H2O x about 1.75
8.6.12GearksutiteCa[Al(F,OH)5(H2O)]
8.6.13ProsopiteCaAl2(F,OH)8
8.6.14YaroslaviteCa3Al2F10(OH)2 · H2O
8.6.16ColquiriiteCaLi[AlF6]
8.6.17ThomsenoliteNaCa[AlF6] · H2O
8.6.18PachnoliteNaCa[AlF6] · H2O
8.6.19Zirklerite(Fe,Mg,Ca)9Al4Cl18(OH)12 · 14H2O (?)

Other Names for Carlhintzeite

Name in Other Languages:

Other Information

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

References for Carlhintzeite

Reference List:
American Mineralogist: 65: 205-206.

Canadian Mineralogist: 17: 103-105.

Internet Links for Carlhintzeite

Localities for Carlhintzeite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Argentina
 
  • Córdoba
    • Punilla Department
Kampf, A.R., Colombo, F & González del Tánago, J. (2010):Carlhintzeite, Ca2AlF7·H2O, from the Gigante granitic pegmatite, Córdoba province, Argentina: description and crystal structure. Mineralogical Magazine. 74, 623-632
Brazil
 
  • Paraíba
    • Borborema mineral province
      • Pedra Lavrada
R. Wegner, H. Pöllmann, T. Witzke, & W. Schuckmann (1998): Colquiriite, carlhintzeite, ralstonite and pachnolite from Serra Branca-Pegmatite/Brazil.- Proceedings 17th General Meeting, IMA, August 1998, Toronto, A151
Germany
 
  • Bavaria
    • Upper Palatinate
      • Pleystein
Dill, H.G., Weber, B. (2009), Pleystein-City on Pegmatite, 4th International Symposium on Granitic Pegmatites, Recife, Brazil.
      • Waidhaus
        • Hagendorf
[Can.Min.(1979) 17, 103-105; Nickel & Nichols, 1991, p34 - "Mineral Reference Manual"]
Italy
 
  • Sardinia
    • Carbonia-Iglesias Province
      • Domusnovas
Bortolozzi, G., Ciriotti, M. E., Galli, E., & Bonacina, E. (2007). Carlhintzeite e cowlesite della Sardegna: primi ritrovamenti italiani. Micro (UK report), 1/2007, 33-38.
Mineral and/or Locality  
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