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Lakargiite

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Lakargiit
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Lakargiit (SNr: A034455)

winzige, farblos glänzende Kristallfragmente in Matrix vom Emmelberg; BB = 1 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Matthias Reinhardt
Contribution: Münchener Micromounter 2014-11-13
Locality: Emmelberg / Üdersdorf / Daun / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Color rotbraun (hohe Ti-Gehalte) über gelblich bis fast farblos
Streak color hellbraun bis cremeweiß
Lustre Glasglanz bis Diamantglanz (dunkle Varietäten Halbmetallglanz)
Hardness (Mohs) 8 - 9
Cleavages (110) und (001) sind gut definiert (orthorhombische Orientierung)
Fracture uneben
Crystal System orthorhombisch, Pnma
Morphology Das Mineral bildet pseudokubische Kristalle bis zu 35 µm Größe sowie bis 200 µm große Aggregate.

Chemism

Chem­ical formula

CaZrO3

Chem­ical com­po­si­tion

Calcium, Zirconium, Sauerstoff

Unit weight: 179.30089 u; Number of atoms in the formula: 5

Info

Empirical formula:

CaZrO3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

26.77

3

60.00

15.9994300

47.9982900

Calcium

Ca

22.35

1

20.00

40.0784000

40.0784000

Zirconium

Zr

50.88

1

20.00

91.2242000

91.2242000

Anal­y­sis wt%

UO3 : 2.24, Nb2O5 : 0.56, ZrO2 : 40.34, TiO2 : 7.89, HfO2 : 0.90, SnO2 : 11.14, Fe2O3 : 2.46, ThO2 : 0.84, Ce2O3 : 0.53, La2O3 : 0.58, CaO : 31.08, Ln2O3 : 1.25 (Ref: American Mineralogist 2008)

Strunz 9th edi­tion incl. updates

4.CC.30

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
C: Metall: Sauerstoff = 2: 3,3: 5, und vergleichbare
C: Mit großen und mittelgroßen Kationen
30:Perowskit-Gruppe

Lapis Clas­sifica­tion

IV/C.10-020

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
10: Perowskit-Reihe

Clas­sifica­tion by Hölzel

4.CF.130

4: OXIDES
C: R2O3 Sesquioxides
F: Perovskite-Group

IMA sta­tus

anerkannt - IMA Mineralveröffentlichungen Juli 2007

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Perowskite group
Perovskite supergroup  ⇒ Stoichiometric perovskites  ⇒ Perovskite subgroup

Optical Properties

Color

rotbraun (hohe Ti-Gehalte) über gelblich bis fast farblos

Streak color

hellbraun bis cremeweiß

Diaphane­ity (Trans­parency)

durchscheinend bis transparent

Lus­tre

Glasglanz bis Diamantglanz (dunkle Varietäten Halbmetallglanz)

max. Birefrin­gence

0.004

Birefringence chart\! Lakargiite title=Birefringence chart Lakargiite

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

2.1

RI value β

2.1

RI value γ / ε

2.1

Ri mean

2.1

2V angle

Biaxial (+)- 0°

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

53

Space Group

Pnma

Cell param­e­ters a (Å)

5.556

Cell param­e­ters b (Å)

5.715

Cell param­e­ters c (Å)

7.960

Cell param­e­ters a/b or c/a

0.972

Cell param­e­ters c/b

1.393

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

252.75

X-Ray Pow­der Diffrac­tion

4.013(35), 4.009(16), 2.881(25), 2.836(100), 2.796(22), 2.006(29), 1.654(17), 1.622(24)

XRD chart Lakargiite

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

Morphol­ogy

Das Mineral bildet pseudokubische Kristalle bis zu 35 µm Größe sowie bis 200 µm große Aggregate.

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

8 - 9

VHN (Hard­ness Vick­ers)

1545 (100g)

Density (g/cm³)

4.59 ber.

4.712 ( ρ calc. Mineralienatlas )

Cleav­ages

(110) und (001) sind gut definiert (orthorhombische Orientierung)

Frac­ture

uneben

Preface

Name from

dem Berg Lakargi

Author (Name, Year)

Evgeny V. Galuskin, 2007

References

IMA Mineralveröffentlichungen Juli 2007.

Galuskin, E.V., Gazeev, V.M., Armbruster, Th., Zadov, A., Galuskina, I.O., Pertsev, N.N., Dziercanowski, P., Kadiyski, M., Gurbanov, A., Wrzalik, R., Winiarski, A. - Lakargiite CaZrO3 – a new mineral of the perovskite group from the North Caucasus, Kabardino-Balkaria, Russia. American Mineralogist (2008), 93, (im Druck).
Mineralien Welt 03/09, Steffen Jahn, Neue Mineralien

IMA group assignments

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

Liuite

FeTiO3

orthorhombisch : mmm : Pnma

4.CC.30

Lueshite

NaNbO3

orthorhombisch : mmm : Pbma

4.CC.30

'Uhligite'

Ca3(Ti,Al,Zr)9O20

4.CC.30

Hiroseite

FeSiO3

orthorhombisch : mmm : Pnma

4.CC.30

Vapnikite

Ca3UO6

monoklin : 2/m : P21/n

4.CC.30

Lakargiite

CaZrO3

orthorhombisch : mmm : Pnma

4.CC.30

Latrappite

(Ca,Na)(Nb,Ti,Fe)O3

orthorhombisch : mmm : Pbnm

4.CC.30

Perovskite

CaTiO3

orthorhombisch : mmm : Pbnm

4.CC.30

Bridgmanite

MgSiO3

orthorhombisch : mmm : Pnma

4.CC.30

Megawite

CaSnO3

orthorhombisch : mmm : Pbnm

4.CC.30

'Natroniobite'

NaNbO3

4.CC.30

Barioperovskite

BaTiO3

orthorhombisch : mm2 : Amm2

4.CC.30

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

Perovskite

CaTiO3

orthorhombisch : mmm : Pbnm

IV/C.10-010

Megawite

CaSnO3

orthorhombisch : mmm : Pbnm

IV/C.10-015

Lakargiite

CaZrO3

orthorhombisch : mmm : Pnma

IV/C.10-020

Latrappite

(Ca,Na)(Nb,Ti,Fe)O3

orthorhombisch : mmm : Pbnm

IV/C.10-030

Barioperovskite

BaTiO3

orthorhombisch : mm2 : Amm2

IV/C.10-035

Tausonite

SrTiO3

kubisch : m3m : Pm3m

IV/C.10-040

Loparite-(Ce)

(Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6

IV/C.10-050

Isolueshite

Na(Nb,Ti)O3

kubisch : m3m : Pm3m

IV/C.10-055

Lueshite

NaNbO3

orthorhombisch : mmm : Pbma

IV/C.10-060

'Natroniobite'

NaNbO3

IV/C.10-070

Macedonite

PbTiO3

tetragonal : 4mm : P4mm

IV/C.10-080

Carmeltazite

ZrAl2Ti4O11

orthorhombisch : mmm : Pnma

IV/C.10-100

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

Perovskite

CaTiO3

orthorhombisch : mmm : Pbnm

4.CF.100

Latrappite

(Ca,Na)(Nb,Ti,Fe)O3

orthorhombisch : mmm : Pbnm

4.CF.110

Loparite-(Ce)

(Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6

4.CF.120

Lakargiite

CaZrO3

orthorhombisch : mmm : Pnma

4.CF.130

Lueshite

NaNbO3

orthorhombisch : mmm : Pbma

4.CF.160

'Natroniobite'

NaNbO3

4.CF.165

Megawite

CaSnO3

orthorhombisch : mmm : Pbnm

4.CF.170

CNMNC (IMA)-Number

IMA 2007-014

CNMNC symbol

Symbol

Lak

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

German pages

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

English pages

Mindat - search for: Lakargiite
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Handbook-of-Mineralogy - search for: Lakargiite
RRUFF - Raman, XRD and other mineral data - search for: Lakargiite
RRUFF - References and PDF downloads - search for: Lakargiite
American-Mineralogist-Crystal-Structure-Database - search for: Lakargiite
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Mineralienatls.de (Forum) - search for: Lakargiit

Russian pages

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German pages

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Locations with GPS information