Manganokukisvumite
This page is currently not sponsored. Click here to sponsor this page.
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.
This page provides mineralogical data about Manganokukisvumite.
Classification of Manganokukisvumite
Approved
Approval Year:
2002
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
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
Chemical Properties of Manganokukisvumite
Formula:
Na6MnTi4(Si8O24)O4 · 4H2O
IMA Formula:
Na6MnTi4Si8O28 · 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 Å, b = 8.612 Å, c = 5.22 Å
Ratio:
a:b:c = 3.373 : 1 : 0.606
Unit Cell V:
1,305.93 ų (Calculated from Unit Cell)
Z:
2
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.
Geological Setting of Type Material:
From small cavities in an albite-rich syenite breccia.
Synonyms of Manganokukisvumite
Other Language Names for Manganokukisvumite
Common Associates
Associated Minerals Based on Photo Data:
Kukisvumite | 2 photos of Manganokukisvumite associated with Kukisvumite on mindat.org. |
Arfvedsonite | 2 photos of Manganokukisvumite associated with Arfvedsonite on mindat.org. |
Labuntsovite Supergroup | 2 photos of Manganokukisvumite associated with Labuntsovite Supergroup on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
9.DB.05 | Balipholite | BaLiMg2Al3(Si2O6)2(OH)4 | Orth. |
9.DB.05 | Carpholite | Mn2+Al2(Si2O6)(OH)4 | Orth. |
9.DB.05 | Ferrocarpholite | (Fe2+,Mg)Al2(Si2O6)(OH)4 | Orth. mmm (2/m 2/m 2/m) : Ccca |
9.DB.05 | Magnesiocarpholite | (Mg,Fe2+)Al2(Si2O6)(OH)4 | Orth. |
9.DB.05 | Potassiccarpholite | (K,☐)(Li,Mn2+)2Al4(Si2O6)2(OH,F)8 | Orth. mmm (2/m 2/m 2/m) : Ccca |
9.DB.05 | Vanadiocarpholite | Mn2+V3+Al(Si2O6)(OH)4 | Orth. mmm (2/m 2/m 2/m) : Ccca |
9.DB.10 | Lorenzenite | Na2Ti2(Si2O6)O3 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
9.DB.15 | Lintisite | LiNa3Ti2(Si2O6)2O2 · 2H2O | Mon. |
9.DB.15 | Punkaruaivite | LiTi2(HSi4O12)(OH)2 · H2O | Mon. 2/m : B2/b |
9.DB.17 | Eliseevite | LiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O | Mon. 2/m : B2/b |
9.DB.20 | Kukisvumite | Na6ZnTi4(Si8O24)O4 · 4H2O | Orth. |
9.DB.25 | Vinogradovite | Na4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3 | Mon. 2/m : B2/b |
9.DB.25 | Paravinogradovite | Na1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2O | Tric. 1 : P1 |
9.DB.30 | Nchwaningite | Mn2+2(SiO3)(OH)2 · H2O | Orth. |
9.DB.35 | Plancheite | Cu8(Si8O22)(OH)4 · H2O | Orth. mmm (2/m 2/m 2/m) |
9.DB.40 | Shattuckite | Cu5(Si2O6)2(OH)2 | Orth. mmm (2/m 2/m 2/m) |
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] | Mon. |
9.DB.50 | Capranicaite | KCaNaAl4B4Si2O18 | Mon. 2/m : P21/m |
Fluorescence of Manganokukisvumite
None
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.
References for Manganokukisvumite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
GAULT, R.A., ERCIT, T.S., GRICE, J.D., and VAN VELTHUIZEN, J. (2004) Manganokukisvumite, a new mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist, 42, 781-785.
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.
External Links:
Mineral Dealers:
Localities for Manganokukisvumite
Locality List




All localities listed without proper references should be considered as questionable.
Canada (TL) | |
| GAULT, R.A., ERCIT, T.S., GRICE, J.D., and VAN VELTHUIZEN, J. (2004) Manganokukisvumite, a new mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist, 42, 781-785. |
Russia | |
| Gault et al. 2004; Yakovenchuk et al. 2005 |
| Mineral News, 27 (2011), #8, 12. |