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Punkaruaivite (Punkaruaivit)

Collectors Summary

Hardness (Mohs) 4–5
Cleavages vollkommen (100)
Fracture treppenartig
Crystal System monoklin, C2/c

Chemism

Chemical formula

LiTi2[Si4O11(OH)](OH)2·H2O

Additional chem. information

Verwandt mit Lintisit und Kukisvumit

Chemical composition

Lithium, Silicium, Titan, Sauerstoff, Wasserstoff

Unit weight: 443.041328 u; Number of atoms in the formula: 25

Info

Empirical formula:

LiTi2[Si4O11(OH)](OH)2·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.91

4

16.00

1.0079470

4.0317880

Lithium

Li

1.57

1

4.00

6.9412000

6.9412000

Oxygen

O

50.56

14

56.00

15.9994300

223.9920200

Silicon

Si

25.36

4

16.00

28.0855300

112.3421200

Titanium

Ti

21.61

2

8.00

47.8671000

95.7342000

Analysis wt%

SiO2 : 51.35, Nb2O5 : 1.06, TiO2 : 32.50, Al2O3 : 0.05, FeO : 0.21, MnO : 0.31, CaO : 0.01, Na2O : 0.29, K2O : 0.14, Li2O : 3.22, H2O : 10.50 (Ref: Canadian Mineralogist 2010)

Strunz 9th edition incl. updates

9.DB.

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
B: Ketten- und Bandsilikate mit 2 periodischen Ketten SiO6; mit zusätzlich O, OH, H2O Pyroxen-verwandte Mineralien

Lapis Classification

VIII/F.03-045

VIII: SILIKATE
F: Ketten- und Bandsilikate
3: Zweierketten [Si2O6] 4-

Classification by Hölzel

9.DE.325

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
E: Orthorhombic Pyroxenes and Pyroxenoides
3: Lorenzenite-Group

IMA status

anerkannt Juli 2008

Mineral status

anerkanntes Mineral

Optical Properties

max. Birefringence

0.068

Birefringence chart\! Punkaruaivite title=Birefringence chart Punkaruaivite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.658

RI value β

1.696

RI value γ / ε

1.726

Ri mean

1.693

2V angle

Biaxial (-) 85°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell parameters a (Å)

26.688

Cell parameters b (Å)

8.757

Cell parameters c (Å)

5.219

Cell parameters a/b or c/a

3.048

Cell parameters c/b

0.596

Cell parameters α

90°

Cell parameters β

91.18

Cell parameters γ

90°

Z

4

Volumne (ų)

1219.457

Kristall structure

aufgeklärt

X-Ray Powder Diffraction

13.3(10), 6.23(8), 4.38(6), 4.16(4), 3.50(8), 3.01(7), 2.81(7), 2.70(4)

XRD chart Punkaruaivite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4–5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.55 berechnet 2.60(5) gemessen

2.413 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen (100)

Fracture

treppenartig

Tenacity

spröde

Preface

Name from

nach der Typlokalität, Mt. Punkaruaiv

Author (Name, Year)

Victor N. Yakovenchuk et al., 2010

References

Victor N. Yakovenchuk, Gregory Yu. Ivanyuk, Yakov A. Pakhomovsky, Ekaterina A. Selivanova, Yurii P. Men’Shikov, Julia A. Korchak, Sergey V. Krivovichev, Dar’ya V. Spiridonova, and Oleg A. Zalkind: PUNKARUAIVITE, LiTi2[Si4O11(OH)](OH)2•H2O, A NEW MINERAL SPECIES FROM HYDROTHERMAL ASSEMBLAGES, KHIBINY AND LOVOZERO ALKALINE MASSIFS, KOLA PENINSULA, RUSSIA. Can Mineral 48 (2010) S.41-50.

Neue Mineralien - IMA WEB Seite Juli 2008

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Aerinite

(Ca,Na)6(Fe3+,Fe2+,Mg,Al)4(Al,Mg)6Si12O36(OH)12(CO3)·12H2O

trigonal : 3m, 3 : P3c1, P3

9.DB.45

Balipholite

BaMg2LiAl3Si4O12(OH,F)8

orthorhombisch : mmm : Ccca

9.DB.05

Carpholite

MnAl2Si2O6(OH)4

orthorhombisch : mmm : Ccca

9.DB.05

Eliseevite

Na1.5Li{Ti2O2[Si4O10.5(OH)1.5]}·2H2O

monoklin : 2/m : C2/c

9.DB.20

Ferrocarpholite

(Fe2+,Mg)Al2Si2O6(OH)4

orthorhombisch : mmm : Ccca

9.DB.05

Kukisvumite

Na6ZnTi4O4(SiO3)8·4H2O

orthorhombisch : mmm : Pccn

9.DB.20

Lintisite

Na3LiTi2O2(SiO3)4·2H2O

monoklin : 2/m : C2/c

9.DB.15

Lorenzenite

Na2Ti2Si2O9

orthorhombisch : mmm : Pbcn

9.DB.10

Magnesiocarpholite

MgAl2Si2O6(OH)4

orthorhombisch : mmm : Ccca

9.DB.05

Nchwaningite

Mn2SiO3(OH)2·H2O

orthorhombisch : mm2 : Pca21

9.DB.30

Paravinogradovite

Na1-2(Ti4+,Fe3+)4[(OH)4|AlSi3O10|(Si2O6)2]·H2O

triklin : 1 : P1

9.DB.25

Plancheite

Cu8Si8O22(OH)4·H2O

orthorhombisch : mmm : Pcnb

9.DB.35

Potassiccarpholite

K(Mn2+,Li)2Al4Si4O12(OH,F)8

orthorhombisch : mmm : Ccca

9.DB.05

Punkaruaivite

LiTi2[Si4O11(OH)](OH)2·H2O

monoklin : 2/m : C2/c

9.DB.

Shattuckite

Cu5(SiO3)4(OH)2

orthorhombisch : mmm : Pcab

9.DB.40

'UM2005-31-SiO:CuH'

Cu8(SiO4)(OH)12·8H2O

9.DB.40

Vanadiocarpholite

Mn2+V3+Al(Si2O6)(OH)4

orthorhombisch : mmm : Ccca

9.DB.05

Vinogradovite

(Na,Ca,K)5(Ti,Nb)4(Si6BeAl)O26·3H2O

monoklin : 2/m : C2/c

9.DB.25

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Magnesiocarpholite

MgAl2Si2O6(OH)4

orthorhombisch : mmm : Ccca

VIII/F.03-010

Ferrocarpholite

(Fe2+,Mg)Al2Si2O6(OH)4

orthorhombisch : mmm : Ccca

VIII/F.03-020

Carpholite

MnAl2Si2O6(OH)4

orthorhombisch : mmm : Ccca

VIII/F.03-030

Vanadiocarpholite

Mn2+V3+Al(Si2O6)(OH)4

orthorhombisch : mmm : Ccca

VIII/F.03-032

Potassiccarpholite

K(Mn2+,Li)2Al4Si4O12(OH,F)8

orthorhombisch : mmm : Ccca

VIII/F.03-035

Balipholite

BaMg2LiAl3Si4O12(OH,F)8

orthorhombisch : mmm : Ccca

VIII/F.03-040

Punkaruaivite

LiTi2[Si4O11(OH)](OH)2·H2O

monoklin : 2/m : C2/c

VIII/F.03-045

Yegorovite

Na4[Si2O4(OH)2]2·7H2O

monoklin : 2/m : P21/c

VIII/F.03-048

Lorenzenite

Na2Ti2Si2O9

orthorhombisch : mmm : Pbcn

VIII/F.03-050

Kukisvumite

Na6ZnTi4O4(SiO3)8·4H2O

orthorhombisch : mmm : Pccn

VIII/F.03-055

'Manganokukisvumite'

Na6MnTi4Si8O28·4(H2O)

VIII/F.03-058

Lintisite

Na3LiTi2O2(SiO3)4·2H2O

monoklin : 2/m : C2/c

VIII/F.03-060

Eliseevite

Na1.5Li{Ti2O2[Si4O10.5(OH)1.5]}·2H2O

monoklin : 2/m : C2/c

VIII/F.03-065

Vinogradovite

(Na,Ca,K)5(Ti,Nb)4(Si6BeAl)O26·3H2O

monoklin : 2/m : C2/c

VIII/F.03-070

Paravinogradovite

Na1-2(Ti4+,Fe3+)4[(OH)4|AlSi3O10|(Si2O6)2]·H2O

triklin : 1 : P1

VIII/F.03-080

Capranicaite

KCaNaAl4B4Si2O18

monoklin : 2/m : P21/n

VIII/F.03-090

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Lorenzenite

Na2Ti2Si2O9

orthorhombisch : mmm : Pbcn

9.DE.300

Lintisite

Na3LiTi2O2(SiO3)4·2H2O

monoklin : 2/m : C2/c

9.DE.320

Punkaruaivite

LiTi2[Si4O11(OH)](OH)2·H2O

monoklin : 2/m : C2/c

9.DE.325

Vinogradovite

(Na,Ca,K)5(Ti,Nb)4(Si6BeAl)O26·3H2O

monoklin : 2/m : C2/c

9.DE.340

Paravinogradovite

Na1-2(Ti4+,Fe3+)4[(OH)4|AlSi3O10|(Si2O6)2]·H2O

triklin : 1 : P1

9.DE.345

Kukisvumite

Na6ZnTi4O4(SiO3)8·4H2O

orthorhombisch : mmm : Pccn

9.DE.360

'Manganokukisvumite'

Na6MnTi4Si8O28·4(H2O)

9.DE.365

Other languages

German

Punkaruaivit

Spanish

Punkaruaivita

English

Punkaruaivite

French

Punkaruaivite

Russian

Пункаруайвит

IMA Number

IMA 2008-018

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Punkaruaivit
Google-Bilder-Suche - search for: Punkaruaivit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Punkaruaivit

English pages

Mindat - search for: Punkaruaivite
Webmineral - search for:Punkaruaivite
Handbook-of-Mineralogy - search for: Punkaruaivite
RRUFF - Raman, XRD and other mineral data - search for: Punkaruaivite
RRUFF - References and PDF downloads - search for: Punkaruaivite
American-Mineralogist-Crystal-Structure-Database - search for: Punkaruaivite
Athena - search for: Punkaruaivite

Russian pages

Webmineral.ru - search for: Пункаруайвит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Punkaruaivit
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Locations with GPS information




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