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Lavinskyite

Pictures (2 Images total)

Lavinskyit
Views (File:
1378222857
): 1019
Lavinskyit
Bildbreite: 2 cm, Fundort: Wessels Mine, Hotazel, Kalahari Manganese Field, Northern Cape, Südafrika
Copyright: Rob Lavinsky; Contribution: thdun5
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine)
Mineral: Lavinskyite
Image: 1378222857
License: Usage for Mineralienatlas project only
Lavinskyit

Bildbreite: 2 cm, Fundort: Wessels Mine, Hotazel, Kalahari Manganese Field, Northern Cape, Südafrika

Copyright: Rob Lavinsky
Contribution: thdun5 2013-09-03
Locality: Wessel's Mine (Wessels Mine) / Hotazel / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Lavinskyite
Views (File:
1441612655
): 572
Lavinskyite
Wessels mine, Kalahari Manganese Fields, Northern Cape Province, South Africa; Source: William W. Pinch, Robert Lavinsky, and Marcus Origlieri; Light blue plates, associated with R120019 wesselsite, and R120077 scottyite. This is the type sample.
Copyright: RRUFF - Univ. of Arizona; Contribution: Stefan
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine)
Mineral: Lavinskyite
Image: 1441612655
License: Usage for Mineralienatlas project only
Lavinskyite

Wessels mine, Kalahari Manganese Fields, Northern Cape Province, South Africa; Source: William W. Pinch, Robert Lavinsky, and Marcus Origlieri; Light blue plates, associated with R120019 wesselsite...

Copyright: RRUFF - Univ. of Arizona
Contribution: Stefan 2015-09-07
Locality: Wessel's Mine (Wessels Mine) / Hotazel / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika

Collectors Summary

Color hellblau
Streak color blass blau
Lustre Glasglanz
Hardness (Mohs) ~5
Cleavages vollkommen {010}, keine Teilbarkeit beobachtet
Solubility unlöslich in H2O, Azeton, HCl
Crystal System orthorhombisch, Pcnb
Morphology Lavinskyit Kristalle sind abgeflacht parallel zu (010)

Chemism

Chemical formula

K(Li,Cu,Mg,Na)Cu6(Si4O11)2(OH)4

Empirical formula (analysis)

(K0.99Ba0.01)Σ1.00(Li1.04Cu0.93Na0.10)Σ2.07(Cu5.57Mg0.43Mn0.01)Σ6.01(Si4.00O11)2(OH)4

Additional chem. information

Isotypisch mit Planchéit

Chemical composition

Kupfer, Lithium, Magnesium, Natrium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1118.351143219 u; Number of atoms in the formula: 47.08

Info

Empirical formula:

(K0.99Ba0.01)(Li1.04Cu0.93Na0.10)(Cu5.57Mg0.43Mn0.01)(Si4.00O11)2(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.36

4

8.50

1.0079470

4.0317880

Lithium

Li

0.65

1.04

2.21

6.9412000

7.2188480

Oxygen

O

37.20

26

55.23

15.9994300

415.9851800

Sodium

Na

0.21

0.1

0.21

22.9897702

2.2989770

Magnesium

Mg

0.93

0.43

0.91

24.3050600

10.4511758

Silicon

Si

20.09

8

16.99

28.0855300

224.6842400

Potassium

K

3.46

0.99

2.10

39.0983100

38.7073269

Manganese

Mn

0.05

0.01

0.02

54.9380499

0.5493805

Copper

Cu

36.93

6.5

13.81

63.5463000

413.0509500

Barium

Ba

0.12

0.01

0.02

137.3277000

1.3732770

Strunz 9th edition incl. updates

9.DB.35

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
35:Planchéit-Gruppe

Classification by Hölzel

9.DE.430

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

IMA status

anerkannt Juli 2012 - CNMNC Newsletter No. 14, October 2012, page 1282; Mineralogical Magazine, 76, 1281-1288

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellblau

Streak color

blass blau

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

max. Birefringence

0.040

Birefringence chart\! Lavinskyite title=Birefringence chart Lavinskyite

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

α = 1.675(1)

RI value β

β = 1.686(1)

RI value γ / ε

γ = 1.715(1)

Ri mean

1.692

2V angle

Biaxial (+) 64(2)° (gemessen)

Orientation

X = a, Y = b, Z = c

Dispersion

keine beobachtet

Pleochroism

X = dunkelblau, Y = hellblau, Z = hellblau

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

60

Space Group

Pcnb

Cell parameters a (Å)

19.046(2)

Cell parameters b (Å)

20.377(2)

Cell parameters c (Å)

5.249(6)

Cell parameters a/b or c/a

0.935

Cell parameters c/b

0.258

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

2037.139

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

10.189(100), 8.984(74), 4.921(25), 3.973(19), 3.343(32), 2.693(29), 2.522(27), 2.316(22)

XRD chart Lavinskyite

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

Morphology

Lavinskyit Kristalle sind abgeflacht parallel zu (010)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

~5

Density (g/cm³)

3.61(3) (gemessen), 3.62 (berechnet)

3.646 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {010}, keine Teilbarkeit beobachtet

Tenacity

spröde

Instability

unlöslich in H2O, Azeton, HCl

(Co-)Type locality

(Co-)Type locality

Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine)

Type material

Mineral Museum of the University of Arizona, Tucson, Arizona, USA

Collection number of type material

19335

Paragenesis of type material

Scottyit, Effenbergerit

Preface

Associations

Wesselsit, Pektolith, Richterit, Sugilit, Scottyit.

Name from

Dr. Robert Lavinsky

Author (Name, Year)

Hexiong Yang, Robert T. Downs, Stanley H. Evans, William W. Pinch (2014)

References

Williams P A, Hatert F, Pasero M, Mills S J (2012) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 14, New minerals and nomenclature modifications approved in 2012, Mineralogical Magazine, 76, 1281-1288 http://rruff.info/uploads/MM76_1281.pdf

Hexiong Yang, Robert T. Downs, Stanley H. Evans and William W. Pinch - Lavinskyite, K(LiCu)Cu6(Si4O11)2(OH)4, isotypic with plancheite, a new mineral from the Wessels mine, Kalahari Manganese Fields, South Africa - American Mineralogist, Volume 99, pages 525–530, (2014) http://www.geo.arizona.edu/xtal/group/pdf/AM99_525.pdf

Other languages

German

Lavinskyit

English

Lavinskyite

Russian

Лавинскиит

Alternative Name

English

Lavinskyite-2O

CNMNC (IMA)-Number

IMA 2012-028

CNMNC symbol

Symbol

Lvs

Locations with GPS information

IDs

GUSID (Global unique identifier short form) kTpLA2kG-Ee0O1PPn93r1Q
GUID (Global unique identifier) 034B3A91-0669-47F8-B43B-53CF9FDDEBD5
Database ID 7427