Perbøeite-(La) (original) (raw)

A valid IMA mineral species

Formula:

CaLa3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2

Specific Gravity:

4.483 (Calculated)

Crystal System:

Monoclinic

Name:

Named in accordance with the gatelite supergroup nomenclature scheme as the La analogue of perbøeite-(Ce).

This page provides mineralogical data about Perbøeite-(La).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:53352:2

154ae03b-6e6e-49fa-9a33-5ece3e73f70d

IMA Classification of Perbøeite-(La)Hide

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IMA Formula:

(CaLa3)(Al3Fe2+)[Si2O7][SiO4]3O(OH)2

Type description reference:

Kasatkin, Anatoly V., Zubkova, Natalia V., Pekov, Igor V., Chukanov, Nikita V., Škoda, Radek, Polekhovsky, Yury S., Agakhanov, Atali A., Belakovskiy, Dmitriy I., Kuznetsov, Aleksey M., Britvin, Sergey N., Pushcharovsky, Dmitry Yu. (2020) The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part I. New gatelite-group minerals ferriperbøeite-(La), (CaLa3)(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2 and perbøeite-(La), (CaLa3)(Al3Fe2+)[Si2O7][SiO4]3O(OH)2. Mineralogical Magazine, 84 (4) 593-607 doi:10.1180/mgm.2020.42

Classification of Perbøeite-(La)Hide

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9.BG.50

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination

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 Perbøeite-(La)Hide

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Cleavage:

Distinct/Good
good on {100} and imperfect on {001}

Fracture:

Irregular/Uneven

Density:

4.483 g/cm3 (Calculated)

Optical Data of Perbøeite-(La)Hide

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RI values:

_n_α = 1.778(8) _n_β = 1.783(8) _n_γ = 1.805(8)

2V:

Measured: 40° (10), Calculated: 51.5°

δ = 0.027

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

Dispersion:

noticeable, inclined

Colour in reflected light:

dark gray

Comments:

X – colourless, Y – medium-dark brown, Z – nearly colourless or brownish.

Chemistry of Perbøeite-(La)Hide

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Mindat Formula:

CaLa3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2

Crystallography of Perbøeite-(La)Hide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 8.9652(4) Å, b = 5.7306(2) Å, c = 17.6770(9) Å
β = 116.053(6)°

Ratio:

a:b:c = 1.564 : 1 : 3.085

Unit Cell V:

815.89 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

From Type Description.

Geological EnvironmentHide

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Type Occurrence of Perbøeite-(La)Hide

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General Appearance of Type Material:

isolated anhedral grains, up to 0.5 mm and granular aggregates, up to 3 x 1 mm

Place of Conservation of Type Material:

Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5253/1

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

Kasatkin, A.V., Zubkova, N.V., Pekov, I.V., Chukanov, N.V., Škoda, R., Polekhovsky, Y.S., Agakhanov, A.A., Belakovskiy, D.I., Kuznetsov, A.M., Britvin, S.N., Pushcharovsky, D.Yu. (2020) The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part I. New gatelite-group minerals ferriperbøeite-(La), (CaLa3)(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2 and perbøeite-(La), (CaLa3)(Al3Fe2+)[Si2O7][SiO4]3O(OH)2. Mineralogical Magazine: 84(4): 593–607.

Synonyms of Perbøeite-(La)Hide

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Other Language Names for Perbøeite-(La)Hide

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Relationship of Perbøeite-(La) to other SpeciesHide

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Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of Perbøeite-(La)Hide

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Other InformationHide

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Notes:

not reactive with cold hydrochloric or nitric acid.

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 Perbøeite-(La)Hide

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References for Perbøeite-(La)Hide

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Reference List:

Miyawaki, Ritsuro, Hålenius, Ulf, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2019) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 47. European Journal of Mineralogy, 31 (1) 197-202 doi:10.1127/ejm/2019/0031-2839

Kasatkin, Anatoly V., Zubkova, Natalia V., Pekov, Igor V., Chukanov, Nikita V., Škoda, Radek, Polekhovsky, Yury S., Agakhanov, Atali A., Belakovskiy, Dmitriy I., Kuznetsov, Aleksey M., Britvin, Sergey N., Pushcharovsky, Dmitry Yu. (2020) The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part I. New gatelite-group minerals ferriperbøeite-(La), (CaLa3)(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2 and perbøeite-(La), (CaLa3)(Al3Fe2+)[Si2O7][SiO4]3O(OH)2. Mineralogical Magazine, 84 (4) 593-607 doi:10.1180/mgm.2020.42

Localities for Perbøeite-(La)Hide

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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.