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Kosnarite (IMA 1991-022)

Pictures (2 Images total)

Kosnarit
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Kosnarit (SNr: B000909)

Fo.:Brasilien, Minas Gerais, Aracuai, Jenipapo, gelber blockiger Kristall BB: 12,0mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2008-07-23
Locality: Jenipapo District / Itinga / Jequitinhonha, Fluss / Minas Gerais / Südosten (Região Sudeste) / Brasilien
gelbe Kosnarit xx
Views (Image: 1132156305): 829
gelbe Kosnarit xx

Größe: bis 1,5mm; Fundort: Itinga Mine, Minas Gerais, Brasilien

Copyright: John Veevaert
Contribution: slugslayer 2005-11-16
Locality: Itinga / Jequitinhonha, Fluss / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Color farblos, graublau, hellgrün, gelb
Streak color weiß
Hardness (Mohs) 4.5
Cleavages vollkommen {102}
Fracture muschelig
Crystal System trigonal, R3c

Chemism

Chem­ical formula

KZr24+[PO4]3

Chem­ical com­po­si­tion

Zirconium, Kalium, Phosphor, Sauerstoff

Unit weight: 506.4611536 u; Number of atoms in the formula: 18

Info

Empirical formula:

KZr2[PO4]3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

37.91

12

66.67

15.9994300

191.9931600

Phosphorus

P

18.35

3

16.67

30.9737612

92.9212836

Potassium

K

7.72

1

5.56

39.0983100

39.0983100

Zirconium

Zr

36.02

2

11.11

91.2242000

182.4484000

Anal­y­sis wt%

ZrO2 : 44.50, HfO2 : 0.50, MnO : 1.00, Na2O : 1.40, K2O : 8.70, F : 0.85, P2O5 : 43.30 (Ref: Rivista Mineralogica Italiana 93)

Strunz 9th edi­tion incl. updates

8.AC.60

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
C: Mit mittelgroßen und großen [Kationen]
60:Kosnarit-Gruppe

Lapis Clas­sifica­tion

VII/A.17-010

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen

Clas­sifica­tion by Hölzel

8.AC.400

8: PHOSPHATES ARSENATES VANADATES
A: Phosphates (-anions -water)
C: Phosphates, C medium + large
4: Kosnarite-Group

Dana 8th edi­tion

38.04.12.01

38: Anhydrous Phosphates, etc
04: Anhydrous Phosphates, etc A+ XO4

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, graublau, hellgrün, gelb

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

max. Birefrin­gence

0.026

Birefringence chart\! Kosnarite title=Birefringence chart Kosnarite

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

1.656

RI value γ / ε

1.682

Ri mean

1.665

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

167

Space Group

R3c

Cell param­e­ters a (Å)

8.687

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

23.877

Cell param­e­ters a/b or c/a

2.749

Cell param­e­ters c/b

-

Z

6

Volumne (ų)

1560.451

X-Ray Pow­der Diffrac­tion

6.41(50),
4.679(50),
4.329(100),
3.806(90),
3.167(40),
2.928(90),
2.502(50),
1.903(40)

XRD chart Kosnarite

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)

3.194

3.233 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {102}

Frac­ture

muschelig

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

USA/Maine/Oxford Co./Paris/Mt. Mica Quarry

Preface

Name from

Richard Kosnar (1946-2006), Mineralienhändler aus Colorado

Author (Name, Year)

Brownfield & Foord & Sutley & Botinelly, 1993

References

American Mineralogist 78 (1993), 653

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

Kosnarite

KZr24+[PO4]3

trigonal : 3m : R3c

8.AC.60

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

Kosnarite

KZr24+[PO4]3

trigonal : 3m : R3c

VII/A.17-010

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

Kosnarite

KZr24+[PO4]3

trigonal : 3m : R3c

8.AC.400

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Lithiophosphate

Li3PO4

orthorhombisch : mmm : Pcmn

38.04.10.01

Olympite

LiNa5(PO4)2

orthorhombisch : 222 : P212121

38.04.10.02

Nalipoite

NaLi2PO4

orthorhombisch : mmm : Pmnb

38.04.10.03

Xenotime-(Y)

YPO4

tetragonal : 4/mmm : I41/amd

38.04.11.01

Chernovite-(Y)

YAsO4

tetragonal : 4/mmm : I41/amd

38.04.11.02

Wakefieldite-(Y)

YVO4

tetragonal : 4/mmm : I41/amd

38.04.11.03

Wakefieldite-(Ce)

CeVO4

tetragonal : 4/mmm : I41/amd

38.04.11.04

Pretulite

Sc[PO4]

tetragonal : 4/mmm : I41/amd

38.04.11.05

Xenotime-(Yb)

(Yb,Y,Er)[PO4]

tetragonal : 4/mmm : I41/amd

38.04.11.06

Kosnarite

KZr24+[PO4]3

trigonal : 3m : R3c

38.04.12.01

Petewilliamsite

(Ni,Co,Cu)30(As2O7)15

monoklin : 2 : C2

38.04.13.01

Other languages

German

Kosnarit

Spanish

Kosnarita

French

Kosnarite

English

Kosnarite

Russian

Коснарит

IMA Number

IMA 1991-022

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Коснарит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Kosnarit
Crystal-Treasure.com - search for: Kosnarit
Bosse - search for: Kosnarit

Locations with GPS information




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