Byelorussite-(Ce) (original) (raw)

A valid IMA mineral species

About Byelorussite-(Ce)Hide

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Formula:

NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O

Colour:

Pale yellow to pale brown

Crystal System:

Orthorhombic

Name:

Named after the type locality in the country of Belarus (also Byeloruss), at the Diabazovoye REE-Be deposit, Zhitkovitchskii gorst, Homyel' (Gomel) Province well 827, depth 177.8 m. The suffix/modifier indicates essential REE, predominantly cerium.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:812:3

f473b0b5-f09a-40e9-ad96-abcd8f2972fc

IMA Classification of Byelorussite-(Ce)Hide

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IMA Formula:

NaBa2Ce2Mn2+Ti2Si8O26(F,OH) · H2O

Type description reference:

Classification of Byelorussite-(Ce)Hide

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9.CE.25

9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions

60.1.1b.4

60 : CYCLOSILICATES Four-Membered Rings
1 : Four-Membered Rings, as Titanosilicates

14.18.32

14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe

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 Byelorussite-(Ce)Hide

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Colour:

Pale yellow to pale brown

Cleavage:

Perfect
{001} perfect, {100} imperfect, {010} very imperfect.

Density:

3.92 g/cm3 (Measured) 4.09 g/cm3 (Calculated)

Optical Data of Byelorussite-(Ce)Hide

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RI values:

_n_α = 1.743 _n_β = 1.760 _n_γ = 1.820

2V:

Measured: 58° to 62°, Calculated: 58°

δ = 0.077

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

Dispersion:

r > v moderate

Optical Extinction:

X = a; Y = b; Z = c.

Comments:

Pleochroism absent to very weak in yellows.

Comments:

Absorption: Z > Y ≈ X.

Chemistry of Byelorussite-(Ce)Hide

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Mindat Formula:

NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O

Crystallography of Byelorussite-(Ce)Hide

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Crystal System:

Orthorhombic

Class (H-M):

m _m_2 - Pyramidal

Cell Parameters:

a = 22.301(4) Å, b = 10.514(2) Å, c = 9.669(2) Å

Ratio:

a:b:c = 2.121 : 1 : 0.92

Unit Cell V:

2,267.12 ų (Calculated from Unit Cell)

Crystal StructureHide

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X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Gomel district, Belarus. Data from the type description.

Geological EnvironmentHide

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Type Occurrence of Byelorussite-(Ce)Hide

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General Appearance of Type Material:

Tabular and thin-tabular crystals to 25x20x4 mm.

Place of Conservation of Type Material:

Fersman Mineralogical Museum, Moscow.

Geological Setting of Type Material:

Salband of a quartz vein in lower Proterozoic metasomatized granosyenites.

Associated Minerals at Type Locality:

Reference:

Shpanov, E.P., Nechelyustov, G.N., Baturin, S.V., and Solntseva, L.S. (1989) Byelorussite-(Ce) - NaMnBa2Ti2Si8O26(F,OH)·H2O - a new mineral of the joaquinite group. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 118(5): 100-107.

Other Language Names for Byelorussite-(Ce)Hide

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Relationship of Byelorussite-(Ce) to other SpeciesHide

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Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of Byelorussite-(Ce)Hide

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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 Byelorussite-(Ce)Hide

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References for Byelorussite-(Ce)Hide

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Reference List:

Zubkova, N.V., Pushcharovski, D.Yu., Giester, G., Tillmanns, E., Pekov, I.V., Krotova, O.D. (2004) Crystal Structure of Byelorussite-(Ce) NaMnBa2Ce2(TiO)2[Si4O12]2(F,OH)·H2O. Crystallography Reports: 49: 964.

Localities for Byelorussite-(Ce)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.