Kukisvumite
A valid IMA mineral species
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About Kukisvumite
Kirovskii Apatite mine. Summer 2013
Kirovskii apatite mine, Kukisvumchorr Mt, Murmansk Oblast, Russia
Kirovskii apatite mine, Kukisvumchorr Mt, Murmansk Oblast, Russia
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.
The Zn analogue of manganokukisvumite and (the Zn0.5-analogue of) lintisite. AM-4 family of natural titanosilicates.
Compare the other two group members: eliseevite and punkaruaivite.
Compare the other two group members: eliseevite and punkaruaivite.
Unique Identifiers
Mindat ID:
2283
Long-form identifier:
mindat:1:1:2283:1
IMA Classification of Kukisvumite
Approved
IMA Formula:
Na6Zn2+Ti4+4O4(SiO3)8·4H2O
Approval year:
1989
First published:
1991
Classification of Kukisvumite
9.DB.20
9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
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
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Kki | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Kukisvumite
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 Kukisvumite
Type:
Biaxial (-)
RI values:
nα = 1.676(3) nβ = 1.746(3) nγ = 1.795(3)
2V:
Measured: 77° , Calculated: 76°
Max. Birefringence:
δ = 0.119
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
weak
Pleochroism:
Non-pleochroic
Chemistry of Kukisvumite
Mindat Formula:
Na6ZnTi4(Si8O24)O4 · 4H2O
Element Weights:
Common Impurities:
Nb,Fe,F
Crystallography of Kukisvumite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pccn
Setting:
Pccn
Cell Parameters:
a = 28.889(4) Å, b = 8.604(4) Å, c = 5.215(3) Å
Ratio:
a:b:c = 3.358 : 1 : 0.606
Unit Cell V:
1,296.25 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 Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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CIF File Best | x | y | z | a | b | c
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0011086 | Kukisvumite | Merlino S, Pasero M, Ferro O (2000) The crystal structure of kukisvumite, Na6ZnTi4(Si2O6)4O4*4H2O Zeitschrift fur Kristallographie 215 352-356 |  | 2000 | Kukisvumtschorr deposit, Khibiny alkaline massif, Kola peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 14.49 Å | (90) |
| 6.42 Å | (60) |
| 4.815 Å | (80) |
| 3.722 Å | (65) |
| 3.009 Å | (100) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Kukisvumite
General Appearance of Type Material:
Fan-shaped intergrowths of long prismatic crystals.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia.
Mining Museum, St. Petersburg, Russia.
Mining Museum, St. Petersburg, Russia.
Geological Setting of Type Material:
Arfvedsonite-microcline pegmatite vein that cuts ijolitic/urtitic rocks.
Associated Minerals at Type Locality:
Synonyms of Kukisvumite
Other Language Names for Kukisvumite
Dutch:Kukisvumiet
German:Kukisvumit
Russian:Кукисвумит
Simplified Chinese:羟硅锌钛钠石
Spanish:Kukisvumita
Traditional Chinese:羥矽鋅鈦鈉石
Common Associates
Associations Based on Photo Data:
| 2 photos of Kukisvumite associated with Manganokukisvumite | Na6MnTi4(Si8O24)O4 · 4H2O |
| 2 photos of Kukisvumite associated with Arfvedsonite | NaNa2(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 Aegirine | NaFe3+Si2O6 |
Related Minerals - Strunz-mindat Grouping
| 9.DB.05 | Potassiccarpholite | K(Mn2+,Li)2Al4Si4O12(OH,F)8 |
| 9.DB.05 | Carpholite | Mn2+Al2(Si2O6)(OH)4 |
| 9.DB.05 | Vanadiocarpholite | Mn2+V3+Al(Si2O6)(OH)4 |
| 9.DB.05 | Magnesiocarpholite | MgAl2Si2O6(OH)4 |
| 9.DB.05 | Ferrocarpholite | Fe2+Al2Si2O6(OH)4 |
| 9.DB.05 | Balipholite | BaLiMg2Al3(Si2O6)2(OH)4 |
| 9.DB.10 | Lorenzenite | Na2Ti2(Si2O6)O3 |
| 9.DB.15 | Punkaruaivite | LiTi2(HSi4O12)(OH)2 · H2O |
| 9.DB.15 | Lintisite | LiNa3Ti2(Si2O6)2O2 · 2H2O |
| 9.DB.17 | Eliseevite | LiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O |
| 9.DB.20 | Manganokukisvumite | Na6MnTi4(Si8O24)O4 · 4H2O |
| 9.DB.25 | Vinogradovite | Na4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3 |
| 9.DB.25 | Paravinogradovite | Na1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2O |
| 9.DB.30 | Nchwaningite | Mn2+2(SiO3)(OH)2 · H2O |
| 9.DB.40 | Shattuckite | Cu5(Si2O6)2(OH)2 |
| 9.DB.40 | 'UM2005-31-SiO:CuH' | Cu11(SiO4)(OH)18 · 9H2O (?) |
| 9.DB.45 | Aerinite | (Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12] |
| 9.DB.50 | Capranicaite | KCaNaAl4B4Si2O18 |
Other Information
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.
Internet Links for Kukisvumite
mindat.org URL:
https://www.mindat.org/min-2283.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Kukisvumite
Reference List:
Jambor, John L., Puziewicz, Jacek (1992) New Mineral Names. American Mineralogist, 77 (9-10) 1116-1121
Pasero, M.; Merlino, St.; Ferro, O. (2000) The crystal structure of kukisvumite, Na6ZnTi4(Si2O6)4O4 · 4H2O. Zeitschrift für Kristallographie, 215 (6). 352-356 doi:10.1524/zkri.2000.215.6.352
Kalashnikova, Galina; Krivovichev, Sergey; Yakovenchuk, Victor; Selivanova, Ekaterina; Avdontceva, Margarita; Ivanyuk, Gregory; Pakhomovsky, Yakov; Gryaznova, Darya; Kabanova, Natalya; Morkhova, Yelizaveta; et al. (2023) The AM-4 Family of Layered Titanosilicates: Single-Crystal-to-Single-Crystal Transformation, Synthesis and Ionic Conductivity. Materials, 17 (1). 111 doi:10.3390/ma17010111
Localities for Kukisvumite
Showing 4 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Russia | |
| Min.Zhurnal (1991) |
| Pekov (1998) |
| Yakovenchuk et al. (2005) | |
| ... |
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Kirovskii apatite mine, Kukisvumchorr Mt, Murmansk Oblast, Russia