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Punkaruaivite

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Formula:
LiTi2(HSi4O12)(OH)2 · H2O
System:
Monoclinic
Colour:
brownish yellow to ...
Hardness:
Name:
For the type locality.

Classification of Punkaruaivite

Approved
Approval Year:
2008
9.DB.15

9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
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http://www.mindat.org/min-38697.html
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Type Occurrence of Punkaruaivite

General Appearance of Type Material:
well-shaped prismatic crystals flattened on (100) and elongate along [001] arranged in
sheaf-like and radiating aggregates.
Place of Conservation of Type Material:
Mineralogical Museum of the St. Petersburg State University (Russia) and the Geological and the Mineralogical Museum of the Geological Institute of the Kola Science Centre of the Russian Academy of Sciences (Apatity, Russia, No. 6441).
Geological Setting of Type Material:
ussingite - aegirine - microcline vein in nepheline syenite. Rare late-stage hydrothermal minerals formed as a result of the alteration of earlier titanosilicates

Physical Properties of Punkaruaivite

Vitreous
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
brownish yellow to colorless
Streak:
White
Hardness (Mohs):
Tenacity:
Brittle
Cleavage:
Perfect
{100}
Fracture:
Step-Like
Density:
2.60(5) g/cm3 (Measured)    2.55 g/cm3 (Calculated)

Crystallography of Punkaruaivite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Space Group Setting:
C2/c
Cell Parameters:
a = 26.68Å, b = 8.75Å, c = 5.24Å
β = 91.2°
Ratio:
a:b:c = 3.049 : 1 : 0.599
Unit Cell Volume:
V 1,223.01 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction Data:
d-spacingIntensity
13.3 (100)
6.23 (80)
4.38 (60)
4.16 (40)
3.50 (80)
3.01 (70)
2.81 (70)
2.70 (40)
(

Optical Data of Punkaruaivite

Type:
Biaxial (-)
RI values:
nα = 1.658(2) nβ = 1.696(2) nγ = 1.726(5)
2V:
Measured: 85° (5), Calculated: 82°
Max Birefringence:
δ = 0.068
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
none
Pleochroism:
Weak
Comments:
Y light brownish yellow, X brownish yellow

Chemical Properties of Punkaruaivite

Formula:
LiTi2(HSi4O12)(OH)2 · H2O
All elements listed in formula:

Relationship of Punkaruaivite to other Species

9.DB.05BalipholiteBaLiMg2Al3(Si2O6)2(OH)4
9.DB.05CarpholiteMn2+Al2(Si2O6)(OH)4
9.DB.05Ferrocarpholite(Fe2+,Mg)Al2(Si2O6)(OH)4
9.DB.05Magnesiocarpholite(Mg,Fe2+)Al2(Si2O6)(OH)4
9.DB.05Potassiccarpholite(K,☐)(Li,Mn2+)2Al4(Si2O6)2(OH,F)8
9.DB.05VanadiocarpholiteMn2+V3+Al(Si2O6)(OH)4
9.DB.10LorenzeniteNa2Ti2(Si2O6)O3
9.DB.15LintisiteLiNa3Ti2(Si2O6)2O2 · 2H2O
9.DB.17EliseeviteLiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O
9.DB.20KukisvumiteNa6ZnTi4(Si8O24)O4 · 4H2O
9.DB.20ManganokukisvumiteNa6MnTi4(Si8O24)O4 · 4H2O
9.DB.25VinogradoviteNa4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3
9.DB.25ParavinogradoviteNa1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2O
9.DB.30NchwaningiteMn22+(SiO3)(OH)2 · H2O
9.DB.35PlancheiteCu8(Si8O22)(OH)4 · H2O
9.DB.40ShattuckiteCu5(Si2O6)2(OH)2
9.DB.40UM2005-31-SiO:CuHCu11(SiO4)(OH)18 · 9H2O ?
9.DB.45Aerinite(Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12]
9.DB.50CapranicaiteKCaNaAl4B4Si2O18

Other Names for Punkaruaivite

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 Punkaruaivite

Reference List:
U. Kolitsch, D. Yu. Pushcharovsky, I. V. Pekov and E. Tillmanns (2000): A new, lintisite-related titanosilicate mineral from Russia: crystal structure, occurrence and properties. Poster, XIXth European Crystallographic Meeting (ECM 19), Nancy, August 25-31, 2000; abstract in Abstracts Book, 363 and Acta Crystallogr. A56 (Supplement), s363.

Yakovenchik, V.N., Ivaniuk, G.Yu., Pakhomovsky, Ya.A., Selivanova, E.A., Men'shikov, Yu.P., Korchak, J.A., Krivovichev, S.V., Spiridonova, D.V., Zalkind, O.A. (2010): Punkaruaivite, Li{Ti2(OH)2[Si4O11(OH)]}•H2O, a new mineral species from hydrothermalites of Khibiny and Lovozero alkaline massifs (Kola Peninsula, Russia). Canadian Mineralogist, 48, 41-50.

Internet Links for Punkaruaivite

Localities for Punkaruaivite

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.
Russia (TL)
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Yakovenchik, V.N., Ivaniuk, G.Yu., Pakhomovsky, Ya.A., Selivanova, E.A., Men'shikov, Yu.P., Korchak, J.A., Krivovichev, S.V., Spiridonova, D.V., Zalkind, O.A. (2010): Punkaruaivite, Li{Ti2(OH)2[Si4O11(OH)]}•H2O, a new mineral species from hydrothermalites of Khibiny and Lovozero alkaline massifs (Kola Peninsula, Russia). Canadian Mineralogist, 48, 41-50.; Yakovenchik, V.N., Ivaniuk, G.Yu., Pakhomovsky, Ya.A., Selivanova, E.A., Men'shikov, Yu.P., Korchak, J.A., Krivovichev, S.V., Spiridonova, D.V., Zalkind, O.A. (2010): Punkaruaivite, Li{Ti2(OH)2[Si4O11(OH)]}•H2O, a new mineral species from hydrothermalites of Khibiny and Lovozero alkaline massifs (Kola Peninsula, Russia). Canadian Mineralogist, 48, 41-50.
        • Lovozero Massif
Yakovenchik, V.N., Ivaniuk, G.Yu., Pakhomovsky, Ya.A., Selivanova, E.A., Men'shikov, Yu.P., Korchak, J.A., Krivovichev, S.V., Spiridonova, D.V., Zalkind, O.A. (2010): Punkaruaivite, Li{Ti2(OH)2[Si4O11(OH)]}•H2O, a new mineral species from hydrothermalites of Khibiny and Lovozero alkaline massifs (Kola Peninsula, Russia). Canadian Mineralogist, 48, 41-50.; Yakovenchik, V.N., Ivaniuk, G.Yu., Pakhomovsky, Ya.A., Selivanova, E.A., Men'shikov, Yu.P., Korchak, J.A., Krivovichev, S.V., Spiridonova, D.V., Zalkind, O.A. (2010): Punkaruaivite, Li{Ti2(OH)2[Si4O11(OH)]}•H2O, a new mineral species from hydrothermalites of Khibiny and Lovozero alkaline massifs (Kola Peninsula, Russia). Canadian Mineralogist, 48, 41-50.
IMA website - Proposals approved in July 2008; Yakovenchuk, V. N., Ivanyuk, G. Y., Krivovichev, S. V., Pakhomovsky, Y. A., Selivanova, E. A., Korchak, J. A., ... & Zalkind, O. A. (2011). Eliseevite, Na1. 5Li [Ti2Si4O12. 5 (OH) 1.5]∙ 2H2O, a new microporous titanosilicate from the Lovozero alkaline massif (Kola Peninsula, Russia). American Mineralogist, 96(10), 1624-1629.
Mineral and/or Locality  
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