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Kukisvumite

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About KukisvumiteHide

Formula:
Na6ZnTi4(Si8O24)O4 · 4H2O
Colour:
White to colorless, some grains with a silver tint
Lustre:
Vitreous
Hardness:
5½ - 6
Specific Gravity:
2.90
Crystal System:
Orthorhombic
Name:
Named for Mount Kukisvumchorr, Russia, the type locality.
This page provides mineralogical data about Kukisvumite.


Classification of KukisvumiteHide

Approved
Approval Year:
1989
First Published:
1991
9.DB.20

9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
65.1.6.2

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2

Physical Properties of KukisvumiteHide

Vitreous
Transparency:
Transparent
Colour:
White to colorless, some grains with a silver tint
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Hardness:
VHN20=517 - 571 kg/mm2 - Vickers
Tenacity:
Elastic
Cleavage:
None Observed
Parting:
{010}
Fracture:
Irregular/Uneven, Splintery
Comment:
Crushes into thin fibers along the elongation
Density:
2.90 g/cm3 (Measured)    2.95 g/cm3 (Calculated)

Optical Data of KukisvumiteHide

Type:
Biaxial (-)
RI values:
nα = 1.676 nβ = 1.746 nγ = 1.795
2V:
Measured: 77° , Calculated: 76°
Max Birefringence:
δ = 0.119
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
weak
Pleochroism:
Non-pleochroic

Chemical Properties of KukisvumiteHide

Formula:
Na6ZnTi4(Si8O24)O4 · 4H2O
IMA Formula:
Na6ZnTi4O4(SiO3)8 · 4H2O
Common Impurities:
Nb,Fe,F

Crystallography of KukisvumiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 28.88 Å, b = 8.6 Å, c = 5.21 Å
Ratio:
a:b:c = 3.358 : 1 : 0.606
Unit Cell V:
1,294.00 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Elongate [001], flattened [100], up to 7 mm long and 0.1 mm thick (type material)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0011086KukisvumiteMerlino S, Pasero M, Ferro O (2000) The crystal structure of kukisvumite, Na6ZnTi4(Si2O6)4O4*4H2O Zeitschrift fur Kristallographie 215 352-3562000Kukisvumtschorr deposit, Khibiny alkaline massif, Kola peninsula, Russia0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
14.49 Å(90)
6.42 Å(60)
4.815 Å(80)
3.722 Å(65)
3.009 Å(100)

Type Occurrence of KukisvumiteHide

General Appearance of Type Material:
Fan-shaped intergrowths of long prismatic crystals
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia.
Museum of the Leningrad Mining Institute, Russia.
Geological Setting of Type Material:
Arfvedsonite-microcline pegmatite vein that cuts ijolitic/urtitic rocks.
Associated Minerals at Type Locality:
Reference:
Yakovenchuk, V.N., Pakhomovskii, Y.A., Bogdanova, A.N. (1991) Kukisvumite - A new mineral from the alkaline pegmatites of the Khibiny massif (Kola Peninsula). Mineralogicheskii Zhurnal: 13(2): 63-67.

Synonyms of KukisvumiteHide

Other Language Names for KukisvumiteHide

German:Kukisvumit
Simplified Chinese:羟硅锌钛钠石
Spanish:Kukisvumita
Traditional Chinese:羥矽鋅鈦鈉石

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Kukisvumite associated with ManganokukisvumiteNa6MnTi4(Si8O24)O4 · 4H2O
2 photos of Kukisvumite associated with Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
2 photos of Kukisvumite associated with Labuntsovite Supergroup
1 photo of Kukisvumite associated with Nenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O
1 photo of Kukisvumite associated with AegirineNaFe3+Si2O6

Related Minerals - Nickel-Strunz GroupingHide

9.DB.05BalipholiteBaLiMg2Al3(Si2O6)2(OH)4Orth.
9.DB.05CarpholiteMn2+Al2(Si2O6)(OH)4Orth.
9.DB.05Ferrocarpholite(Fe2+,Mg)Al2(Si2O6)(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05Magnesiocarpholite(Mg,Fe2+)Al2(Si2O6)(OH)4Orth.
9.DB.05Potassiccarpholite(K,☐)(Li,Mn2+)2Al4(Si2O6)2(OH,F)8Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05VanadiocarpholiteMn2+V3+Al(Si2O6)(OH)4Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.10LorenzeniteNa2Ti2(Si2O6)O3Orth. mmm (2/m 2/m 2/m) : Pbcn
9.DB.15LintisiteLiNa3Ti2(Si2O6)2O2 · 2H2OMon.
9.DB.15PunkaruaiviteLiTi2(HSi4O12)(OH)2 · H2OMon. 2/m : B2/b
9.DB.17EliseeviteLiNa1.5Ti2(H1.5Si4O12)O2 · 2H2OMon. 2/m : B2/b
9.DB.20ManganokukisvumiteNa6MnTi4(Si8O24)O4 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pccn
9.DB.25VinogradoviteNa4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3Mon. 2/m : B2/b
9.DB.25ParavinogradoviteNa1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2OTric. 1 : P1
9.DB.30NchwaningiteMn2+2(SiO3)(OH)2 · H2OOrth.
9.DB.35PlancheiteCu8(Si8O22)(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
9.DB.40ShattuckiteCu5(Si2O6)2(OH)2Orth. mmm (2/m 2/m 2/m)
9.DB.40UM2005-31-SiO:CuHCu11(SiO4)(OH)18 · 9H2O (?)
9.DB.45Aerinite(Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12]Mon.
9.DB.50CapranicaiteKCaNaAl4B4Si2O18Mon. 2/m : P21/m

Related Minerals - Dana Grouping (8th Ed.)Hide

65.1.6.1LorenzeniteNa2Ti2(Si2O6)O3Orth. mmm (2/m 2/m 2/m) : Pbcn
65.1.6.3LintisiteLiNa3Ti2(Si2O6)2O2 · 2H2OMon.

Other InformationHide

Notes:
Yellow-green luminescence in the electron microprobe beam
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 KukisvumiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Yakovenchuk, V.N., Pakhomovskii, Y.A., Bogdanova, A.N. (1991) Kukisvumite - A new mineral from the alkaline pegmatites of the Khibiny massif (Kola Peninsula). Mineralogicheskii Zhurnal: 13(2): 63-67.
Jambor, J.L., Puziewicz, J. (1992) New mineral names. American Mineralogist: 77: 1116-1121.
New Minerals (1997) New Minerals 1990-1994.
Merlino, S., Pasero, M., Ferro, O. (2000) The crystal structure of kukisvumite, Na6ZnTi4(Si2O6)4O4·4H2O. Zeitschrift für Kristallographie: 215: 352-356.

Internet Links for KukisvumiteHide

Localities for KukisvumiteHide

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.
Russia
 
  • Murmansk Oblast
    • Khibiny Massif
Min.Zhurnal,(1991) 13, n2, 63-67
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
www.koeln.netsurf.de/~w.steffens/lovo.htm
 
Mineral and/or Locality  
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