Manganokukisvumite
A valid IMA mineral species
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Formula:
Na6MnTi4(Si8O24)O4 · 4H2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
5½ - 6
Specific Gravity:
2.86
Crystal System:
Orthorhombic
Name:
Named as the manganese-dominant analogue of kukisvumite.
The Mn analogue of kukisvumite and (the Mn0.5-analogue of) lintisite. AM-4 family of natural titanosilicates.
Unique Identifiers
Mindat ID:
27386
Long-form identifier:
mindat:1:1:27386:0
GUID
(UUID V4):
(UUID V4):
21ebae7d-b91a-4983-9afc-9052f6cbf2aa
IMA Classification of Manganokukisvumite
Classification of Manganokukisvumite
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
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 |
|---|---|---|
| Mkki | 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 Manganokukisvumite
Vitreous
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Sectile
Cleavage:
None Observed
Fracture:
Splintery
Density:
2.86 g/cm3 (Measured) 2.88 g/cm3 (Calculated)
Optical Data of Manganokukisvumite
Type:
Biaxial (-)
RI values:
nα = 1.657 nβ = 1.741 - 1.747 nγ = 1.789 - 1.795
2V:
Measured: 70°
Max Birefringence:
δ = 0.132 - 0.138
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:
High
Dispersion:
None
Optical Extinction:
X = a; Y = b; Z = c.
Chemistry of Manganokukisvumite
Mindat Formula:
Na6MnTi4(Si8O24)O4 · 4H2O
Crystallography of Manganokukisvumite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pccn
Cell Parameters:
a = 29.05(2) Å, b = 8.612(6) Å, c = 5.220(4) Å
Ratio:
a:b:c = 3.373 : 1 : 0.606
Unit Cell V:
1,305.93 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Type material:
Radiating, fan-shaped groups of crystals. Crystals are flattened on {100} and elongate parallel to [001]. The only observed forms are {100} and {010} pinacoids and a prism that could not be measured.
Radiating, fan-shaped groups of crystals. Crystals are flattened on {100} and elongate parallel to [001]. The only observed forms are {100} and {010} pinacoids and a prism that could not be measured.
Twinning:
None observed
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 14.47 Å | (100) |
| 3.025 Å | (40) |
| 6.43 Å | (20) |
| 2.881 Å | (20) |
| 4.83 Å | (10) |
| 3.743 Å | (10) |
| 2.591 Å | (10) |
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 Manganokukisvumite
General Appearance of Type Material:
Thin, flattened and sword-shaped crystals to 0.5 mm in length, commonly forming rosette-like radiating groups.
Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa, Ontario, Canada, CMNMC 83392 and CMNMC 83393.
Geological Setting of Type Material:
From small cavities in an albite-rich syenite breccia.
Associated Minerals at Type Locality:
Synonyms of Manganokukisvumite
Other Language Names for Manganokukisvumite
Common Associates
Associated Minerals Based on Photo Data:
| 2 photos of Manganokukisvumite associated with Kukisvumite | Na6ZnTi4(Si8O24)O4 · 4H2O |
| 2 photos of Manganokukisvumite associated with Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| 2 photos of Manganokukisvumite associated with Labuntsovite Supergroup |
Related Minerals - Strunz-mindat Grouping
| 9.DB.05 | Balipholite | BaLiMg2Al3(Si2O6)2(OH)4 |
| 9.DB.05 | Carpholite | Mn2+Al2(Si2O6)(OH)4 |
| 9.DB.05 | Ferrocarpholite | Fe2+Al2Si2O6(OH)4 |
| 9.DB.05 | Magnesiocarpholite | MgAl2Si2O6(OH)4 |
| 9.DB.05 | Potassiccarpholite | K(Mn2+,Li)2Al4Si4O12(OH,F)8 |
| 9.DB.05 | Vanadiocarpholite | Mn2+V3+Al(Si2O6)(OH)4 |
| 9.DB.10 | Lorenzenite | Na2Ti2(Si2O6)O3 |
| 9.DB.15 | Lintisite | LiNa3Ti2(Si2O6)2O2 · 2H2O |
| 9.DB.15 | Punkaruaivite | LiTi2(HSi4O12)(OH)2 · H2O |
| 9.DB.17 | Eliseevite | LiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O |
| 9.DB.20 | Kukisvumite | Na6ZnTi4(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.35 | Plancheite | Cu8(Si8O22)(OH)4 · 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 |
Fluorescence of Manganokukisvumite
Not fluorescent
Other Information
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 Manganokukisvumite
mindat.org URL:
https://www.mindat.org/min-27386.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
References for Manganokukisvumite
Localities for Manganokukisvumite
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.
Canada (TL) | |
| Gault et al. (2004) |
Russia | |
| Gault et al. 2004 +1 other reference |
| Mineral News (2011) |
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