Bario-olgite (original) (raw)

A valid IMA mineral species

About Bario-olgiteHide

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Formula:

(Ba,Sr)(Na,Sr,REE)2Na(PO4)2 ·

Name:

For the chemical composition and its relationship to olgite

Originally considered to be Ba(Na,Sr,REE)2Na[PO4]2, the barium-dominant analogue of olgite, but then proposed for discreditation after the crystal structure of olgite was revised and found to be also Ba-dominant [Sokolowa, E. et al. (2005)]. However, since then, Sr-dominant olgites have been found and the discreditation proposal has been withdrawn. "Olgite" itself may in future become a series name rather than a species, and bario-olgite now has the revised formula (Ba,Sr)(Na,Sr,REE)2Na[PO4]2.

See also message http://www.mindat.org/mesg-14-95789.html

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:26520:5

78b89bbf-8935-4df4-9691-a215c1e5435c

IMA Classification of Bario-olgiteHide

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IMA Formula:

Na(Na,Sr,Ce)2Ba(PO4)2

Type description reference:

Pekov, I.V., Chukanov, N.V., Kulikova, I.M., Zubkova, N.V., Krotova, O.D., Sorokina, N.I., Pushcharovsky, D.Yu. (2004): New mineral bario-olgite, Ba(Na,Sr,REE)2Na[PO4]2, and its crystal structure. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 133(1): 41-49.

Classification of Bario-olgiteHide

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8.AC.40

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations

38.1.3.2

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4

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 Bario-olgiteHide

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Cleavage:

Poor/Indistinct
Imperfect on (00l) and (hk0).

Fracture:

Irregular/Uneven

Density:

3.986 g/cm3 (Measured) 4.000 g/cm3 (Calculated)

Optical Data of Bario-olgiteHide

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RI values:

_n_ω = 1.628(2) _n_ε = 1.623(3)

δ = 0.005

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

Chemistry of Bario-olgiteHide

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Mindat Formula:

(Ba,Sr)(Na,Sr,REE)2Na(PO4)2 ·

Common Impurities:

Sr,La,Ce,Ca,K,Mn,Si

Crystallography of Bario-olgiteHide

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Class (H-M):

3 - Pyramidal

Cell Parameters:

a = 5.549 Å, c = 7.032 Å

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 Bario-olgiteHide

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General Appearance of Type Material:

Grains up to 1.5 x 1 cm and, more rarely, pyramidal-prismatic crystals.

Place of Conservation of Type Material:

A.E. Fersman Mineralogical Museum, Russian Academy of Science, Moscow, Russia; 2908/1.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

Pekov, I.V., N.V. Chukanov, I.M. Kulikova, N.V. Zubkova, O.D. Krotova, N.I. Sorokina, D.Yu. Pushcharovsky (2004), New mineral bario-olgite, Ba(Na,Sr,REE)2Na[PO4]2, and its crystal structure. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva, 133(1), 41-49.

Synonyms of Bario-olgiteHide

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Other Language Names for Bario-olgiteHide

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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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Fluorescence of Bario-olgiteHide

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Bright pink-orange in (short wave) and weak pink-red (long wave).

Other InformationHide

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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 Bario-olgiteHide

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References for Bario-olgiteHide

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Reference List:

Pekov, I.V., Chukanov, N.V., Kulikova, I.M., Zubkova, N.V., Krotova, O.D., Sorokina, N.I., Pushcharovsky, D.Yu. (2004): New mineral bario-olgite, Ba(Na,Sr,REE)2Na[PO4]2, and its crystal structure. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 133(1): 41-49.

Localities for Bario-olgiteHide

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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.