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Maleevite

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About MaleeviteHide

06187530014947128626750.jpg
Bulgarian mineralogist Mikhail Naidenovitch Maleev.
Formula:
BaB2Si2O8
Colour:
White
Lustre:
Vitreous
Hardness:
7
Specific Gravity:
3.78
Crystal System:
Orthorhombic
Name:
After the Bulgarian mineralogist Mikhail Naidenovitch Maleev (born 1940), a well known expert on the morphology of crystals and mineral systematics.
The barium analogue of Danburite and Pekovite.


Classification of MaleeviteHide

Approved
Approval year:
2002
First published:
2004
9.FA.65

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions

Physical Properties of MaleeviteHide

Vitreous
Transparency:
Transparent
Colour:
White
Streak:
White
Hardness:
Hardness:
VHN50=997 - 1139 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.78(1) g/cm3 (Measured)    3.79 g/cm3 (Calculated)

Optical Data of MaleeviteHide

Type:
Biaxial (-)
RI values:
nα = 1.649 nβ = 1.656 nγ = 1.656
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of MaleeviteHide

Formula:
BaB2Si2O8

Crystallography of MaleeviteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 8.141 Å, b = 8.176 Å, c = 9.038 Å
Ratio:
a:b:c = 0.996 : 1 : 1.105
Unit Cell V:
601.58 ų
Z:
2

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005928MaleevitePautov L A, Agakhanov A A, Sokolova E V, Hawthorne F C (2004) Maleevite, BaB2Si2O8, and pekovite, SrB2Si2O8, new mineral species from the Dara-i-Pioz alkaline massif, Northern Tajikistan: Description and crystal structure The Canadian Mineralogist 42 107-1192004Dara-i-Pioz alkaline massif, Northern Tajikistan0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.62 Å(1)
2.021 Å(0.7)
3.39 Å(0.6)
6.07 Å(0.6)
2.83 Å(0.5)
2.481 Å(0.4)
4.86 Å(0.3)

Type Occurrence of MaleeviteHide

General Appearance of Type Material:
Anhedral equant crystals from 0.5 to 2 mm in diameter.
Place of Conservation of Type Material:
A. E. Fersman Mineralogical Museum, Russian Academy of Science, Moscow, Russia.
Geological Setting of Type Material:
Aegirine-microcline-quartz pegmatite in syenite
Associated Minerals at Type Locality:
Reference:
Pautov, L.A., Agakhanov, A.A., Sokolova, E., Hawthorne, F.C. (2004) Maleevite, BaB2Si2O8, and pekovite, SrB2Si2O8, new mineral species from the Dara-I-Pioz Alkaline Massif, northern Tajikistan: description and crystal structure. The Canadian Mineralogist: 42: 107-119.

Synonyms of MaleeviteHide

Other Language Names for MaleeviteHide

Simplified Chinese:硅钡硼石
Traditional Chinese:矽鋇硼石

Related Minerals - Nickel-Strunz GroupingHide

9.FA.05KaliophiliteKAlSiO4Trig. 3 : P3
9.FA.05KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
9.FA.05NephelineNa3K(Al4Si4O16)Hex. 6 : P63
9.FA.05Panunzite(K,Na)AlSiO4Hex. 6 : P63
9.FA.05TrikalsiliteK2NaAl3(SiO4)3Hex.
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3
9.FA.05MegakalsiliteKAlSiO4Hex. 6 : P63
9.FA.10MalinkoiteNaBSiO4Hex. 6 : P63
9.FA.15VirgiliteLiAlSi2O6Hex. 6 2 2 : P62 2 2
9.FA.25LisitsyniteKBSi2O6Orth. 2 2 2 : P2 2 2
9.FA.30AdulariaKAlSi3O8Mon.
9.FA.30Anorthoclase(Na,K)AlSi3O8Tric.
9.FA.30Buddingtonite(NH4)(AlSi3O8)Mon. 2 : P21
9.FA.30CelsianBa(Al2Si2O8)Mon. 2/m
9.FA.30Hyalophane(K,Ba)[Al(Si,Al)Si2O8]Mon.
9.FA.30MicroclineK(AlSi3O8)Tric. 1
9.FA.30OrthoclaseK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30SanidineK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30RubiclineRb(AlSi3O8)Tric.
9.FA.30MonalbiteNaAlSi3O8Mon. 2/m : B2/m
9.FA.35AlbiteNa(AlSi3O8)Tric. 1
9.FA.35Andesine(Na,Ca)[Al(Si,Al)Si2O8]Tric.
9.FA.35AnorthiteCa(Al2Si2O8)Tric. 1 : P1
9.FA.35Bytownite(Ca,Na)[Al(Al,Si)Si2O8]Tric.
9.FA.35Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
9.FA.35Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
9.FA.35ReedmergneriteNaBSi3O8Tric.
9.FA.40ParacelsianBa(Al2Si2O8)Mon.
9.FA.45SvyatoslaviteCa(Al2Si2O8)Orth.
9.FA.45KumdykoliteNa(AlSi3O8)Orth. mmm (2/m 2/m 2/m) : Pnnm
9.FA.50SlawsoniteSr(Al2Si2O8)Mon. 2/m : P21/b
9.FA.55LisetiteCaNa2Al4Si4O16Orth. mm2
9.FA.60BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
9.FA.60StronalsiteNa2SrAl4Si4O16Orth.
9.FA.65DanburiteCaB2Si2O8Orth. mmm (2/m 2/m 2/m)
9.FA.65PekoviteSrB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.70Lingunite(Na,Ca)AlSi3O8Tet. 4/m : I4/m
9.FA.75KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc

Fluorescence of MaleeviteHide

Bright blue in short-wave ultraviolet light

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MaleeviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pautov, L.A., Agakhanov, A.A., Sokolova, E., Hawthorne, F.C. (2004) Maleevite, BaB2Si2O8, and pekovite, SrB2Si2O8, new mineral species from the Dara-I-Pioz Alkaline Massif, northern Tajikistan: description and crystal structure. The Canadian Mineralogist: 42: 107-119.
Mandarino, J.A. (2004) New minerals. The Canadian Mineralogist: 42: 1901-1927.
Jambor, J.L., Roberts, A.C. (2005) New mineral names. American Mineralogist: 90: 271-275.
Pekov, I.V. (2007) New minerals from former Soviet Union countries, 1998-2006: new minerals approved by the IMA commission on new minerals and mineral names. Mineralogical Almanac: 11: 9-51.

Internet Links for MaleeviteHide

Localities for MaleeviteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Tajikistan (TL)
 
  • Districts of Republican Subordination
Pautov, L.A., Agakhanov, A.A., Sokolova, E., Hawthorne, F.C. (2004) Maleevite, BaB2Si2O8, and pekovite, SrB2Si2O8, new mineral species from the Dara-I-Pioz Alkaline Massif, northern Tajikistan: description and crystal structure. The Canadian Mineralogist: 42: 107-119.
 
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