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Russian mineralogist Aleksander Nikolaevich Labuntsov.
Na4K4Mn22+Ti8O4(Si4O12)4(OH)4 · 10-12H2O
Named after the Russian mineralogists Aleksander Nikolaevich Labuntsov and Ekaterina Eutiikkieva Labuntsov-Kostyleva (for whom the mineral kostylevite is also named).
This is the original labuntsovite. It is now designated labuntsovite-Mn for the dominance of manganese among the divalent cations.

Classification of Labuntsovite-Mn

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions

16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb

Physical Properties of Labuntsovite-Mn

Hardness (Mohs):

Optical Data of Labuntsovite-Mn

Biaxial (+)
RI values:
nα = 1.684 - 1.695 nβ = 1.693 - 1.702 nγ = 1.792 - 1.814
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.
Surface Relief:

Chemical Properties of Labuntsovite-Mn

IMA Formula:
Na4K4Mn22+Ti8O4(Si4O12)4(OH)4 · 10-12H2O
Elements listed in formula:
Common Impurities:

Crystallography of Labuntsovite-Mn

Crystal System:

Type Occurrence of Labuntsovite-Mn

Relationship of Labuntsovite-Mn to other Species

Other Members of Group:
Labuntsovite-FeNa4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O
Labuntsovite-MgNa4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O
9.CE.20TaramelliteBa4(Fe3+,Ti)4O2[B2Si8O27]Clx; x = 0 to 1
9.CE.25Bario-orthojoaquiniteBa4Fe22+Ti2O2(SiO3)8 · H2O
9.CE.25Byelorussite-(Ce)NaBa2Ce2Mn2+Ti2Si8O26(F,OH) · H2O
9.CE.25Joaquinite-(Ce)NaBa2Fe2+Ti2Ce2(SiO3)8O2(OH) · H2O
9.CE.25Orthojoaquinite-(Ce)NaBa2Fe2+Ce2Ti2(SiO3)8O2(O,OH) · H2O
9.CE.25Strontiojoaquinite(Na,Fe)2Ba2Sr2Ti2(SiO3)8(O,OH)2 · H2O
9.CE.25Orthojoaquinite-(La)NaBa2La2Fe2+Ti2Si8O26(OH,O,F) · H2O
9.CE.30aNenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O
9.CE.30dLemmleinite-KNa4K8Ti8(Si4O12)4(O,OH)8 · 8H2O
9.CE.30aKorobitsynite(Na,◻)8Ti4(Si4O12)2(O,OH)4 · 8H2O
9.CE.30cKuzmenkoite-MnK4Mn2Ti8(Si4O12)4(OH,O)8 · 10-12H2O
9.CE.30bVuoriyarvite-K(K,Na,◻)12Nb8(Si4O12)4O8 · 12-16H2O
9.CE.30bTsepinite-Na(Na,H3O,K,Sr,Ba,◻)12Ti8(Si4O12)4(OH,O)8 · 12-16H2O
9.CE.30cKarupmøllerite-Ca(Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2O
9.CE.30eLabuntsovite-MgNa4K4Mg2Ti8O4(Si4O12)4(OH)4 · 10-12H2O
9.CE.30eLabuntsovite-FeNa4K4Fe22+Ti8(Si4O12)4(O,OH)8 · 10-12H2O
9.CE.30dLemmleinite-BaNa4K4Ba2+xTi8(Si4O12)4(O,OH)8 · 8H2O
9.CE.30cGjerdingenite-FeK2Fe(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30hNeskevaaraite-FeNaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30bTsepinite-K(K,Ba,Na)2(Ti,Nb)2Si4O12(OH,O)2 · 3H2O
9.CE.30bParatsepinite-Ba(Ba,Na,K)2-x(Ti,Nb)2Si4O12(OH,O)2 · 4H2O
9.CE.30bTsepinite-Ca(Ca,K,Na)2-x(Ti,Nb)2Si4O12(OH,O)2 · 4H2O
9.CE.30hAlsakharovite-ZnNaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
9.CE.30cGjerdingenite-MnK2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30cLepkhenelmite-ZnBa2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
9.CE.30bTsepinite-Sr(Sr,Ba,K)(Ti,Nb)2Si4O12(OH,O)2 · 3H2O
9.CE.30bParatsepinite-Na(Na,Sr,K,Ca)2(Ti,Nb)2(Si4O12)(O,OH)2 · 4H2O
9.CE.30fParalabuntsovite-MgNa8K8Mg4Ti16(Si4O12)8(O,OH)16 · 20-24H2O
9.CE.30cGjerdingenite-CaK2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30cGjerdingenite-Na(K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2O
9.CE.30hGutkovaite-MnCaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O
9.CE.30cKuzmenkoite-ZnK2ZnTi4(Si4O12)2(OH)4 · 6-8H2O
9.CE.30gOrganovaite-MnK2MnNb4(Si4O12)2O4 · 5-7H2O
9.CE.30gOrganovaite-ZnK2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30gParakuzmenkoite-Fe(K,Ba)8Fe4Ti16(Si4O12)8(OH,O)16 · 20-28H2O
9.CE.30cBurovaite-Ca(Na,K)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8 · 12H2O
9.CE.45Komarovite(Ca,Sr,Na)6-x(Nb,Ti)6(Si4O12)(O,OH,F)16 · nH2O
9.CE.45Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O
16.14.1ZoriteNa6Ti5Si12O34(O,OH)5 · 11H2O
16.14.2VinogradoviteNa4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3
16.14.6JonesiteKBa2Ti2(Si5Al)O18 · nH2O
16.14.11Carlosturanite(Mg,Fe2+,Ti)21(Si,Al)12O28(OH)34 · H2O
16.14.12EakeriteCa2Sn4+Al2Si6O18(OH)2 · 2H2O
16.14.14WickenburgitePb3CaAl2Si10O27 · 4H2O
16.14.15MaricopaiteCa2Pb7(Si36Al12)O99 · n(H2O,OH)

Other Names for Labuntsovite-Mn

Name in Other Languages:

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 Labuntsovite-Mn

Reference List:
Semenov, E.I., & Burova, T.A. (1955): On the new mineral, labuntsovite, and the so-called titanoelpidite. Doklady Akademii Nauk SSSR., 101, 1113-1116 (in Russian). [English abstract in : American Mineralogist, 41, (1956) 163]

Chukanov, Nikita V.; Pekov, Igor V.; Rastsvetaeva, Ramiza K.; Nekrasov, Aleksei N. (1999): Labuntsovite: solid solutions and features of the crystal structure. Canadian Mineralogist, 37, 901-910.

Chukanov, N.V., Pekov, I.V. & Khomyakov, A.P. (2002): Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy, 14, 165-173.

Internet Links for Labuntsovite-Mn URL:
Please feel free to link to this page.

Localities for Labuntsovite-Mn

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359. CHUKANOV, N.V., PEKOV, I.V., ZADOV, A.E., VOLOSHIN, A.V., SUBBOTIN, V.V., SOROKHTINA, N.V., RASTVETAEVA, R.K., and KRIVOVICHEV, S.V., (2003) Minerals of the labuntsovite group. Nauka, Moscow, 323p (in Russian).
      • Lajemmerais RCM
        • Varennes & St-Amable
HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
  • Khomas Region
    • Windhoek District
      • Aris
Petersen, O. V., Niedermayr, G., Pekov, I. V., Balić Žunić, T. and Brandstätter, F. (2004): Tsepinit-Na und Labuntsovit-Mn, seltene Mineralien aus dem Phonolith von Aris, Namibia. Mineralien-Welt, 15 (2), 44-48. (in German)
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
      • Aldan Shield
        • Chara and Tokko Rivers Confluence
[Lapis 1993:4 p.13-20]
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Pekov et al (2005) New Data on Minerals Vol 40 pp11-16; Azarova, Y. V., Shlyukova, Z. V., Zolotarev Jr, A. A., & Organova, N. I. (2009). Burovaite-Ca,(Na, K) 4Ca2 (Ti, Nb) 8 [Si4O12] 4 (OH, O) 8· 12H2O, a new labuntsovite-group mineral species and its place in low-temperature mineral formation in pegmatites of the Khibiny pluton, Kola Peninsula, Russia. Geology of Ore Deposits, 51(8), 774-783.
          • Koashva Mt
[World of Stones 95:5-6, p64]
          • Kukisvumchorr Mt
[World of Stones 95:5-6, p64]
Takai, Y., Uehara, S., Inoo, T. (2011) Minerals from Khibiny, Kola, Russia. Chigaku Kenkyu, 60 (1), 41-46.; Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
Mikhailova, Y.A., Konopleva, N.G., Yakovenchuk, V.N., Ivanyuk, G.Y., Men’shikov, Y.P., and Pakhomovsky, Y.A. (2007): Geology of Ore Deposits 49(7), 590-598.
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Kovdor Massif
[World of Stones 95:5-6, p64]
        • Lovozero Massif
[AmMin 85:1322]
          • Kuftn'yun Mt
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
[AmMin 85:1562]; Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
        • Turii Cape
      • Northern Karelia
  • Arkansas
    • Hot Spring Co.
      • Magnet Cove
Rocks & Min.:64:300-307.
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