Babefphite
A valid IMA mineral species
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About Babefphite
Formula:
BaBePO4(F,OH)
Colour:
White
Lustre:
Vitreous, Greasy
Hardness:
3½
Specific Gravity:
4.31
Crystal System:
Triclinic
Name:
In allusion to its composition, containing BArium, BEryllium, Fluorine, and PHosphorus.
This page provides mineralogical data about Babefphite.
Unique Identifiers
Mindat ID:
476
Long-form identifier:
mindat:1:1:476:5
IMA Classification of Babefphite
Approved
IMA Formula:
BaBePO4F
Approval year:
1966
First published:
1966
Classification of Babefphite
8.BA.15
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
A : With small and medium-sized cations
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
A : With small and medium-sized cations
41.5.3.1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
22.1.13
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
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 |
|---|---|---|
| Bbf | 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 Babefphite
Vitreous, Greasy
Transparency:
Transparent
Colour:
White
Streak:
White
Hardness:
3½ on Mohs scale
Hardness:
VHN100=140 - 200 - Vickers
Tenacity:
Very brittle
Cleavage:
None Observed
Density:
4.31 g/cm3 (Measured) 4.44 g/cm3 (Calculated)
Optical Data of Babefphite
Type:
Uniaxial (+)
RI values:
nω = 1.629(2) nε = 1.632(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
Comments:
Elongation negative
Biaxial; pseudouniaxial (+)
Biaxial; pseudouniaxial (+)
Chemistry of Babefphite
Mindat Formula:
BaBePO4(F,OH)
Element Weights:
Crystallography of Babefphite
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 6.889(3) Å, b = 16.814(7) Å, c = 6.902(3) Å
α = 90.01(3)°, β = 89.99(3)°, γ = 90.32(3)°
α = 90.01(3)°, β = 89.99(3)°, γ = 90.32(3)°
Ratio:
a:b:c = 0.41 : 1 : 0.41
Unit Cell V:
799.46 ų (Calculated from Unit Cell)
Z:
8
Comment:
pseudotetragonal
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) |
|---|---|---|---|---|---|---|---|
| 0019355 | Babefphite | Simonov M A, Egorov-Tismenko Y K, Belov N V (1980) Use of modern X-ray equipment to solve fine problems of structural mineralogy by the example of the crystal structure of babefphite BaBe(PO4)F Soviet Physics Crystallography 25 28-31 | 1980 | Aunik F-Be deposit, Transbaikalia, Eastern-Siberian Region, Russia | 0 | 293 | |
| 0012446 | Babefphite | Shashkin D N, Simonov M A, Belov N V (1967) Crystal structure of babepfite BaBePO4F = Ba(Be,P)2O4F Doklady Akademii Nauk SSSR 176 1392-1395 | 1967 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.190 Å | (100) |
| 2.163 Å | (100) |
| 1.516 Å | (100) |
| 2.760 Å | (80) |
| 2.440 Å | (70) |
| 2.033 Å | (70) |
| 1.135 Å | (70b) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-𝑇 alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Babefphite
General Appearance of Type Material:
Grains of equant and rarely flattened tabular form; 0.15 x 0.2 mm to 1 x 1.5 mm.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 72021.
Geological Setting of Type Material:
In eluvium directly above rare-metal skarn deposits associated with alkaline intrusions.
Associated Minerals at Type Locality:
Synonyms of Babefphite
Other Language Names for Babefphite
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 8.BA. | Vladkuzminite | K4CuZn3(AsO4)4 |
| 8.BA. | Axelite | Na14Cu7(AsO4)8F2Cl2 |
| 8.BA. | Elramlyite-(Ce) | (◻0.67Ce0.33)Th2(PO4)2F3 |
| 8.BA. | Tomcampbellite | [KCl][Fe2+14(OH)6(PO4)6(PO3OH)2] |
| 8.BA.05 | Väyrynenite | BeMn2+(PO4)(OH) |
| 8.BA.10 | Herderite | CaBe(PO4)F |
| 8.BA.10 | Bergslagite | CaBeAsO4(OH) |
| 8.BA.10 | Hydroxylherderite | CaBe(PO4)(OH) |
Other Information
Notes:
Insoluble in cold or warm HCl or HNO3. Soluble in aqua regia or HF.
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 Babefphite
mindat.org URL:
https://www.mindat.org/min-476.html
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References for Babefphite
Reference List:
Localities for Babefphite
Showing 2 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.
Czech Republic | |
| Cempírek +2 other references |
Russia (TL) | |
| Nazarova et al (1966) +1 other reference |
Quick NavTopAbout BabefphiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Aunik F-Be deposit, Vitim Plateau, Baunt District, Buryatia, Russia