Dusmatovite
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About Dusmatovite
Formula:
K(Na,□)2(Zn,Li)3(Mn2+,Y,Zr)2[Si12O30]
Colour:
Dark blue, dirty blue, violet-brown
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
2.96
Crystal System:
Hexagonal
Member of:
Name:
For Vyacheslav Djuraevitch Dusmatov (1936-2004), Mineralogist and geologist who has done much work at the locality.
The Zn-dominant analogue of darapiosite. Unique combination of elements.
Dusmatovite differs from darapiosite in the dominance of Zn at the T2 site. Zn dominates over both Li and Mn.
Dusmatovite differs from darapiosite in the dominance of Zn at the T2 site. Zn dominates over both Li and Mn.
Classification of Dusmatovite
Approved
8/E.22-135
9.CM.05
9 : SILICATES (Germanates)
C : Cyclosilicates
M : [Si6O18]12- 6-membered double rings (sechser-Doppelringe)
9 : SILICATES (Germanates)
C : Cyclosilicates
M : [Si6O18]12- 6-membered double rings (sechser-Doppelringe)
63.2.1a.11
63 : CYCLOSILICATES Condensed Rings
2 : Condensed Rings (Milarite - Osumilite group)
63 : CYCLOSILICATES Condensed Rings
2 : Condensed Rings (Milarite - Osumilite group)
Physical Properties of Dusmatovite
Vitreous
Transparency:
Translucent
Colour:
Dark blue, dirty blue, violet-brown
Streak:
Light blue
Hardness:
4½ on Mohs scale
Hardness:
VHN100=423 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
Basal
Density:
2.96(2) g/cm3 (Measured) 2.978 g/cm3 (Calculated)
Optical Data of Dusmatovite
Type:
Uniaxial (-)
RI values:
nω = 1.590 nε = 1.586
Max Birefringence:
δ = 0.004

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Strong
Comments:
light blue (E), light violet (O)
Chemical Properties of Dusmatovite
Formula:
K(Na,□)2(Zn,Li)3(Mn2+,Y,Zr)2[Si12O30]
IMA Formula:
KK2Mn2(Zn2LiSi12)O30
Idealised Formula:
K(Na□)2Zn3Mn2+2[Si12O30]
Common Impurities:
Li,Y,Mn(III),Zr,Fe
Crystallography of Dusmatovite
Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P6/mcc
Cell Parameters:
a = 10.218(4) Å, c = 14.292(3) Å
Ratio:
a:c = 1 : 1.399
Unit Cell V:
1,292.28 ų (Calculated from Unit Cell)
Morphology:
grains in aggregates
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.15 Å | (45) |
3.75 Å | (50) |
3.25 Å | (100) |
2.545 Å | (52) |
Type Occurrence of Dusmatovite
General Appearance of Type Material:
grains, in aggregates up to 4 x 5 cm
Geological Setting of Type Material:
boulder of pegmatite in a glacial moraine
Associated Minerals at Type Locality:
Synonyms of Dusmatovite
Other Language Names for Dusmatovite
German:Dusmatovit
Russian:Дусматовит
Simplified Chinese:锰锌大隅石
Spanish:Dusmatovita
Traditional Chinese:錳鋅大隅石
Relationship of Dusmatovite to other Species
Member of:
Other Members of this group:
Agakhanovite-(Y) | (YCa)□2KBe3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Almarudite | K(□,Na)2(Mn2+,Fe2+,Mg)2(Be,Al)3[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm |
Aluminosugilite | KNa2Al2Li3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Armenite | BaCa2Al6Si9O30 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnna |
Berezanskite | K□2Li3(Ti,Zr,Sn)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Brannockite | (K,Na)□2Li3(Sn,Zr,Ti)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Chayesite | KMg4Fe3+[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Darapiosite | K(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Eifelite | KNa3Mg4Si12O30 | Hex. |
Friedrichbeckeite | K(□0.5Na0.5)2Mg2Be3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Klöchite | (□Na)KFe2+2Zn3(Si12O30) | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
Merrihueite | (K,Na)2(Fe,Mg)5Si12O30 | Hex. |
Milarite | K2Ca4Al2Be4Si24O60 · H2O | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Oftedalite | K(Sc,Ca,Mn2+)2◻2[(Be,Al)3Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Osumilite | (K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30 | Hex. |
Osumilite-(Mg) | KMg2Al3(Al2Si10)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Poudretteite | KNa2B3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Roedderite | (Na,K)2(Mg,Fe)5Si12O30 | Hex. 6 m2 : P62c |
Shibkovite | K(□,K,Na)2Zn3Ca2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Sogdianite | K(□,Na)2Li3(Zr,Fe,Ti)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
Sugilite | K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30] | Hex. |
Trattnerite | □(Fe3+,Mg,Fe2+)2(Mg,Fe2+,Fe3+)3(Si12O30) | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
UM1990-73-SiO:KMnNaZn | (K,Na)2Zn3Mn1.5Si12O30 | Hex. |
Yagiite | (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 | Hex. 6/mmm (6/m 2/m 2/m) |
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Dusmatovite associated with Caesium-Kupletskite | (Cs,K,Na)3(Mn,Fe2+)7(Ti,Nb)2Si8O24(O,OH,F)7 |
1 photo of Dusmatovite associated with Aegirine | NaFe3+Si2O6 |
Related Minerals - Nickel-Strunz Grouping
9.CM.05 | Armenite | BaCa2Al6Si9O30 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnna |
9.CM.05 | Brannockite | (K,Na)□2Li3(Sn,Zr,Ti)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Chayesite | KMg4Fe3+[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Darapiosite | K(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Eifelite | KNa3Mg4Si12O30 | Hex. |
9.CM.05 | Merrihueite | (K,Na)2(Fe,Mg)5Si12O30 | Hex. |
9.CM.05 | Milarite | K2Ca4Al2Be4Si24O60 · H2O | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Osumilite-(Mg) | KMg2Al3(Al2Si10)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Osumilite | (K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30 | Hex. |
9.CM.05 | Poudretteite | KNa2B3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Roedderite | (Na,K)2(Mg,Fe)5Si12O30 | Hex. 6 m2 : P62c |
9.CM.05 | Sogdianite | K(□,Na)2Li3(Zr,Fe,Ti)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Sugilite | K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30] | Hex. |
9.CM.05 | Yagiite | (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 | Hex. 6/mmm (6/m 2/m 2/m) |
9.CM.05 | Berezanskite | K□2Li3(Ti,Zr,Sn)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Shibkovite | K(□,K,Na)2Zn3Ca2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Almarudite | K(□,Na)2(Mn2+,Fe2+,Mg)2(Be,Al)3[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm |
9.CM.05 | Trattnerite | □(Fe3+,Mg,Fe2+)2(Mg,Fe2+,Fe3+)3(Si12O30) | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.05 | Oftedalite | K(Sc,Ca,Mn2+)2◻2[(Be,Al)3Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.9.CM. | Aluminosugilite | KNa2Al2Li3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
9.CM.10 | Faizievite | K2Na(Ca6Na)Ti4Li6[Si6O18]2[Si12O30]F2 | Tric. 1 : P1 |
Related Minerals - Dana Grouping (8th Ed.)
63.2.1a.1 | Brannockite | (K,Na)□2Li3(Sn,Zr,Ti)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
63.2.1a.2 | Chayesite | KMg4Fe3+[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
63.2.1a.3 | Darapiosite | K(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
63.2.1a.4 | Eifelite | KNa3Mg4Si12O30 | Hex. |
63.2.1a.5 | Merrihueite | (K,Na)2(Fe,Mg)5Si12O30 | Hex. |
63.2.1a.6 | Osumilite | (K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30 | Hex. |
63.2.1a.8 | Poudretteite | KNa2B3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
63.2.1a.9 | Sugilite | K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30] | Hex. |
63.2.1a.10 | Yagiite | (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 | Hex. 6/mmm (6/m 2/m 2/m) |
63.2.1a.12 | Milarite | K2Ca4Al2Be4Si24O60 · H2O | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
63.2.1a.13 | Sogdianite | K(□,Na)2Li3(Zr,Fe,Ti)2[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
63.2.1a.14 | Roedderite | (Na,K)2(Mg,Fe)5Si12O30 | Hex. 6 m2 : P62c |
Other Information
IR Spectrum:
1030 cm-1 (Si-O), 795cm-1 (ring silicate)
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 Dusmatovite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mineralogical Record: 28: 220-221.
Pautov, L.A., Agakhanov, A.A., Sokolova, E.V., Ignatenko, K.I.
(1996): Dusmatovite, a new mineral of the milarite group. Vestnik Moskovskolo Universiteta: series 4 Geology (2): 54-60.
Sokolova, E. V. & Pautov, L. A. (1995): Crystal structure of dusmatovite. Doklady Akademii Nauk 344, 607-610.
Internet Links for Dusmatovite
mindat.org URL:
https://www.mindat.org/min-6906.html
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Localities for Dusmatovite
Locality List




All localities listed without proper references should be considered as questionable.
Tajikistan (TL) | |
| Canadian Mineralogist 42:107-119 (2004); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow |
Dara-i-Pioz Glacier, Districts of Republican Subordination, Tajikistan