Labuntsovite-Mg
A valid IMA mineral species
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About Labuntsovite-Mg
Formula:
Na4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O
Colour:
Colorless to white, rarely yellowish, pink, or light orange
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.88
Crystal System:
Monoclinic
Member of:
Name:
Named for the magnesium content and its relationship to Labuntsovite-Mn
This page provides mineralogical data about Labuntsovite-Mg.
Unique Identifiers
Mindat ID:
11424
Long-form identifier:
mindat:1:1:11424:8
GUID
(UUID V4):
(UUID V4):
3b56ae7f-c370-4d8c-9748-c07fa8dd87e5
IMA Classification of Labuntsovite-Mg
Approved
IMA Formula:
Na4K4Mg2Ti8O4(Si4O12)4(OH)4 · 10-12H2O
Approval year:
1998
Type description reference:
Khomyakov, A. P., Nechelyustov, G. N., Ferraris, G., Gula, A., Ivaldi, G. (2001) Labuntsovite-Fe, Na4K4(Ba,K)2(Fe,Mg,Mn)1+xTi8(Si4O12)4(O,OH)8·10H2O and labuntsovite-Mg, Na4K4(Ba,K)2(Mg,Fe)1+xTi8(Si4O12)4(O,OH)8·10H2O - two new minerals from the Khibina and Kovdor alkaline massifs, Kola Peninsula. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 130 (4) 36-45
Classification of Labuntsovite-Mg
9.CE.30e
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
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 |
---|---|---|
Lab-Mg | 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 Labuntsovite-Mg
Vitreous
Transparency:
Transparent
Colour:
Colorless to white, rarely yellowish, pink, or light orange
Hardness:
5 on Mohs scale
Cleavage:
Imperfect/Fair
Imperfect on {001}
Imperfect on {001}
Fracture:
Step-Like
Density:
2.88(2) g/cm3 (Measured) 2.89 g/cm3 (Calculated)
Optical Data of Labuntsovite-Mg
Type:
Biaxial (+)
RI values:
nα = 1.688(2) nβ = 1.698(2) nγ = 1.802(3)
2V:
Measured: 37° (1)
Max Birefringence:
δ = 0.114
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
Pleochroism:
Visible
Comments:
Pleochroism: X = Z = pale yellow, Y = orange.
Colorless varieties nonpleochroic.
Colorless varieties nonpleochroic.
Chemistry of Labuntsovite-Mg
Mindat Formula:
Na4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O
Common Impurities:
Fe
Crystallography of Labuntsovite-Mg
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 14.292(4) Å, b = 13.750(4) Å, c = 7.792(2) Å
β = 117.03(1)°
β = 117.03(1)°
Ratio:
a:b:c = 1.039 : 1 : 0.567
Unit Cell V:
1,363.99 ų (Calculated from Unit Cell)
Z:
1
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.175 Å | (100) |
3.093 Å | (57) |
3.083 Å | (55) |
6.94 Å | (51) |
3.024 Å | (51) |
2.576 Å | (48) |
6.34 Å | (34) |
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 Labuntsovite-Mg
General Appearance of Type Material:
prismatic crystals to 3 mm
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Moscow, Russia (91287).
Associated Minerals at Type Locality:
Reference:
Khomyakov, A.P., Nechelyustov, G.N., Ferraris, G., Gula, A., & Ivaldi, G. (2001): Labuntsovite-Fe, Na4K4(Ba,K)2(Fe,Mg,Mn)1+xTi8(Si4O12)4(O,OH)8 10H2O and labuntsovite-Mg, Na4K4(Ba,K)2(Mg,Fe)1+xTi8(Si4O12)4(O,OH)8 10H2O - two new labuntsovite group minerals from Khibiny and Kovdor alkaline massifs, Kola Peninsula. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva, 130, No.4, 36-45 (in Russian with English abstract).
Synonyms of Labuntsovite-Mg
Other Language Names for Labuntsovite-Mg
Russian:Лабунцовит-Mg
Relationship of Labuntsovite-Mg to other Species
Member of:
Other Members of this group:
Labuntsovite-Fe | Na4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O | Mon. 2/m : B2/m |
Labuntsovite-Mn | Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O | Mon. 2/m : B2/m |
UM2006-16- SiO:BaFeHKMgMnNaNbTi | K3.58Na2.06Ba1.65(H2O)1.58(Mn0.42Mg0.20Fe0.16)[Ti6.75Nb0.65(OH)0.9O0.1)8(Si4O12)4] · 11.5H2O |
Common Associates
Associated Minerals Based on Photo Data:
2 photos of Labuntsovite-Mg associated with Catapleiite | Na2Zr(Si3O9) · 2H2O |
1 photo of Labuntsovite-Mg associated with Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O |
Related Minerals - Strunz-mindat Grouping
9.CE. | Dutkevichite-(Ce) | NaZnBa2Ce2Ti2Si8O26F · H2O |
9.CE. | Niobobaotite | Ba4(Ti2.5Fe2+1.5)Nb4Si4O28Cl |
9.CE.05 | Papagoite | CaCu[H3AlSi2O9] |
9.CE.10 | Verplanckite | Ba4Mn2+2Si4O12(OH,H2O)3Cl3 |
9.CE.15 | Baotite | Ba4(Ti,Nb,W)8O16(SiO3)4Cl |
9.CE.20 | Nagashimalite | Ba4(V,Ti)4B2Si8O27(O,OH)2Cl |
9.CE.20 | Taramellite | Ba4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2Clx |
9.CE.20 | Titantaramellite | Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx |
9.CE.25 | Bario-orthojoaquinite | (Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O |
9.CE.25 | Byelorussite-(Ce) | NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O |
9.CE.25 | Joaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O |
9.CE.25 | Orthojoaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O |
9.CE.25 | Strontiojoaquinite | Sr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O |
9.CE.25 | Strontio-orthojoaquinite | (Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O |
9.CE.25 | Orthojoaquinite-(La) | NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2O |
9.CE.30a | Unnamed (Ca-Na-ordered analogue of Korobitsynite) | (Ca,Na)2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2O |
9.CE.30e | Labuntsovite-Mn | Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O |
9.CE.30a | Nenadkevichite | (Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O |
9.CE.30d | Lemmleinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2O |
9.CE.30a | Korobitsynite | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2O |
9.CE.30c | Kuzmenkoite-Mn | K2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2O |
9.CE.30b | Vuoriyarvite-K | K2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2O |
9.CE.30b | Tsepinite-Na | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30c | Karupmøllerite-Ca | (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2O |
9.CE.30e | Labuntsovite-Fe | Na4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O |
9.CE.30d | Lemmleinite-Ba | Na2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O |
9.CE.30c | Gjerdingenite-Fe | K2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30h | Neskevaaraite-Fe | K3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2O |
9.CE.30b | Tsepinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30b | Paratsepinite-Ba | Ba4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2O |
9.CE.30b | Tsepinite-Ca | Ca(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30h | Alsakharovite-Zn | NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O |
9.CE.30c | Gjerdingenite-Mn | K2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30c | Lepkhenelmite-Zn | (Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O |
9.CE.30b | Tsepinite-Sr | Sr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
9.CE.30b | Paratsepinite-Na | (Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8 · nH2O n ~ 8 |
9.CE.30f | Paralabuntsovite-Mg | Na8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2O |
9.CE.30c | Gjerdingenite-Ca | K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30c | Gjerdingenite-Na | K2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2O |
9.CE.30h | Gutkovaite-Mn | K2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O |
9.CE.30c | Kuzmenkoite-Zn | K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4 · 6-8H2O |
9.CE.30g | Organovaite-Mn | K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2O |
9.CE.30g | Organovaite-Zn | K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
9.CE.30g | Parakuzmenkoite-Fe | (K,Ba)4Fe(Ti,Nb)8(Si4O12)4(O,OH)8 · 14H2O |
9.CE.30c | Burovaite-Ca | (Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2O |
9.CE.45 | Komarovite | (Ca,Mn)(Nb,Ti)2[Si2O7](O,F)3 · 3.5H2O |
9.CE.45 | Natrokomarovite | (Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O |
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 Labuntsovite-Mg
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https://www.mindat.org/min-11424.html
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References for Labuntsovite-Mg
Reference List:
Khomyakov, A. P., Nechelyustov, G. N., Ferraris, G., Gula, A., Ivaldi, G. (2001) Labuntsovite-Fe, Na4K4(Ba,K)2(Fe,Mg,Mn)1+xTi8(Si4O12)4(O,OH)8·10H2O and labuntsovite-Mg, Na4K4(Ba,K)2(Mg,Fe)1+xTi8(Si4O12)4(O,OH)8·10H2O - two new minerals from the Khibina and Kovdor alkaline massifs, Kola Peninsula. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 130 (4) 36-45
Localities for Labuntsovite-Mg
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Russia | |
| Pekov et al. (2004) |
| Pekov (2003) |
Ivanyuk | |
| American Mineralogist +2 other references |
Mikhailova et al. (2016) | |
USA | |
| Mrose et al. (1961) |
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Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia