Labuntsovite-Mn
A valid IMA mineral species - grandfathered
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About Labuntsovite-Mn
Formula:
Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O
Colour:
Brownish-yellow, bright orange, dark-red
Lustre:
Greasy
Hardness:
6
Specific Gravity:
2.89 - 3.02
Crystal System:
Monoclinic
Member of:
Name:
Originally named labuntsovite after the Russian mineralogists Aleksander Nikolaevich Labuntsov and Ekaterina Eutiikkieva Labuntsov-Kostyleva (for whom the mineral kostylevite is also named). Aleksander Labuntsov had earlier discovered the mineral and described it as titaniferous elpidite. The suffix/modifier was added in 2000.
This is the original labuntsovite. It is now designated labuntsovite-Mn for the dominance of manganese among the divalent cations.
Unique Identifiers
Mindat ID:
2309
Long-form identifier:
mindat:1:1:2309:8
GUID
(UUID V4):
(UUID V4):
a2f67a1b-c669-4cf1-822f-22298a93fc28
IMA Classification of Labuntsovite-Mn
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA
IMA Formula:
Na4K4Mn2+2Ti8O4(Si4O12)4(OH)4 · 10-12H2O
First published:
1955
Approval history:
IMA Case 00–A - Renamed (Grice and Ferraris, 2003).
Classification of Labuntsovite-Mn
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
16.14.8
16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb
16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb
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-Mn | 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-Mn
Greasy
Transparency:
Transparent, Translucent
Colour:
Brownish-yellow, bright orange, dark-red
Streak:
White
Hardness:
6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On (100).
On (100).
Fracture:
Sub-Conchoidal
Density:
2.89 - 3.02 g/cm3 (Measured)
Optical Data of Labuntsovite-Mn
Type:
Biaxial (+)
RI values:
nα = 1.684 - 1.695 nβ = 1.693 - 1.702 nγ = 1.792 - 1.814
2V:
Measured: 20° to 44°, Calculated: 30° to 36°
Max Birefringence:
δ = 0.108 - 0.119
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:
strong
Optical Extinction:
X = b; Y = c; Z = a.
Pleochroism:
Visible
Comments:
Z = brownish-yellow; X = yellowish.
Chemistry of Labuntsovite-Mn
Mindat Formula:
Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O
Common Impurities:
Fe,Mn,Mg,Ca
Crystallography of Labuntsovite-Mn
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 14.18 Å, b = 13.70 Å, c = 7.74 Å
β = 117°
β = 117°
Ratio:
a:b:c = 1.035 : 1 : 0.565
Unit Cell V:
1,339.73 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Prismatic crystals. Forms include c{001}, b{010}, m{110}, d{011}, and s{111}.
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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2x2x2 | 3x3x3 | 4x4x4
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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) |
---|---|---|---|---|---|---|---|
0012358 | Labuntsovite-Mn | Rastsvetaeva R K, Chukanov N V, Pekov I V, Shlyukova Z V, Khomyakov A P (1998) Structures of two potassium-rich labuntsovites in relation to the crystal chemistry of minerals of the labuntsovite-nenadkevichite family Crystallography Reports 43 820-827 | 1998 | 0 | 293 | ||
0015562 | Labuntsovite-Mn | Golovastikov N I (1973) Crystal structure of the alkali titanosilicate labuntsovite Soviet Physics Crystallography 18 950-955 | 1973 | 0 | 293 | ||
0015563 | Labuntsovite-Mn | Golovastikov N I (1974) Crystal structure of the alkali titanosilicate labuntsovite Soviet Physics Crystallography 18 596-599 | 1974 | 0 | 293 |
CIF Raw Data - click here to close
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-Mn
Co-Type Localities:
General Appearance of Type Material:
Columnar aggregates of brownish-yellow crystals. The crystals are prismatic to 12x3x2 mm.
Place of Conservation of Type Material:
Ecole Nationale Supérieure des Mines, Paris, France, (cotype).
National Museum of Natural History, Washington, D.C., USA, number 113995 (type).
Vernadsky State Geological Museum, Moscow, Russia, number 46311 (type).
National Museum of Natural History, Washington, D.C., USA, number 113995 (type).
Vernadsky State Geological Museum, Moscow, Russia, number 46311 (type).
Geological Setting of Type Material:
In voids in nepheline syenite.
Associated Minerals at Type Locality:
Synonyms of Labuntsovite-Mn
Other Language Names for Labuntsovite-Mn
Russian:Лабунцовит-Mn
Relationship of Labuntsovite-Mn 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-Mg | Na4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O | 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:
16 photos of Labuntsovite-Mn associated with Tsepinite-Na | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
15 photos of Labuntsovite-Mn associated with Calcite | CaCO3 |
14 photos of Labuntsovite-Mn associated with Aegirine | NaFe3+Si2O6 |
8 photos of Labuntsovite-Mn associated with Delindeite | (Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O |
7 photos of Labuntsovite-Mn associated with Microcline | K(AlSi3O8) |
7 photos of Labuntsovite-Mn associated with Natrolite | Na2Al2Si3O10 · 2H2O |
7 photos of Labuntsovite-Mn associated with Gonnardite | (Na,Ca)2(Si,Al)5O10 · 3H2O |
6 photos of Labuntsovite-Mn associated with Analcime | Na(AlSi2O6) · H2O |
5 photos of Labuntsovite-Mn associated with Catapleiite | Na2Zr(Si3O9) · 2H2O |
5 photos of Labuntsovite-Mn associated with Hilairite | Na2Zr[SiO3]3 · 3H2O |
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.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-Mg | Na4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O |
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
Thermal Behaviour:
Easily fusible before the blowpipe to a bluish enamel.
Notes:
Dissolves with difficulty in HCl, HNO3, or H2SO4.
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-Mn
mindat.org URL:
https://www.mindat.org/min-2309.html
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References for Labuntsovite-Mn
Localities for Labuntsovite-Mn
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.
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada