Babefphite (original) (raw)

A valid IMA mineral species

About BabefphiteHide

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Name:

In allusion to its composition, containing BArium, BEryllium, Fluorine, and PHosphorus.

This page provides mineralogical data about Babefphite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:476:5

fdf9cb19-152c-46be-b299-467fae17d716

IMA Classification of BabefphiteHide

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Type description reference:

Classification of BabefphiteHide

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8.BA.15

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

22.1.13

22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of BabefphiteHide

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Hardness:

VHN100=140 - 200 - Vickers

Density:

4.31 g/cm3 (Measured) 4.44 g/cm3 (Calculated)

Optical Data of BabefphiteHide

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RI values:

_n_ω = 1.629(2) _n_ε = 1.632(2)

δ = 0.003

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Comments:

Elongation negative
Biaxial; pseudouniaxial (+)

Chemistry of BabefphiteHide

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Mindat Formula:

BaBePO4(F,OH)

Crystallography of BabefphiteHide

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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)°

Ratio:

a:b:c = 0.41 : 1 : 0.41

Unit Cell V:

799.46 ų (Calculated from Unit Cell)

Crystal StructureHide

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X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of BabefphiteHide

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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:

Reference:

Nazarova, A.S., Kuznetsova, N.N., Shaskin, D.P. (1966) Babefphite, a barium beryllium fluoride-phosphate. Doklady Akademii Nauk SSSR: 167: 895-897.

Synonyms of BabefphiteHide

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Other Language Names for BabefphiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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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 BabefphiteHide

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References for BabefphiteHide

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Localities for BabefphiteHide

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This 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.

Locality ListHide

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- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.