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Kosmochlor

Pictures (3 Images total)

Kosmochlor (Ureyit)
Views (File:
1235914062
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Kosmochlor (Ureyit)
schwarz in Jadeit (gr) Cabochon, Tawmaw,Kachin State, Myanmar (Burma). B: 14 mm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Myanmar (Burma)/Kachin-Staat/Mohnyin, Distrikt/Hpakant Township/Hpakant-Tawmaw Jade-Gangzug/Tawmaw
Mineral: Kosmochlor
Image: 1235914062
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Kosmochlor (Ureyit)

schwarz in Jadeit (gr) Cabochon, Tawmaw,Kachin State, Myanmar (Burma). B: 14 mm.
Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2009-03-01
Locality: Tawmaw / Hpakant-Tawmaw Jade-Gangzug / Hpakant Township / Mohnyin, Distrikt / Kachin-Staat / Myanmar (Burma)
Kosmochlor (Ureyit)
Views (File:
1235914327
): 2477
Kosmochlor (Ureyit)
In Jadeit; derb. Tawmaw, Kachin State, Myanmar (Burma); B: 2,8 cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Myanmar (Burma)/Kachin-Staat/Mohnyin, Distrikt/Hpakant Township/Hpakant-Tawmaw Jade-Gangzug/Tawmaw
Mineral: Kosmochlor
Image: 1235914327
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Kosmochlor (Ureyit)

In Jadeit; derb. Tawmaw, Kachin State, Myanmar (Burma); B: 2,8 cm.
Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2009-03-01
Locality: Tawmaw / Hpakant-Tawmaw Jade-Gangzug / Hpakant Township / Mohnyin, Distrikt / Kachin-Staat / Myanmar (Burma)
Kosmochlor (Ureyit)
Views (File:
1633796534
): 322
Kosmochlor (Ureyit)
Fundort: Tawmaw, Hpakant Township, Mohnyin District, Kachin State, Myanmar (former Burma); Größe: 0,3 x 2,8 x 2,2 cm
Copyright: blackforestmining; Contribution: blackforestmining
Collection: blackforestmining
Location: Myanmar (Burma)/Kachin-Staat/Mohnyin, Distrikt/Hpakant Township/Hpakant-Tawmaw Jade-Gangzug/Tawmaw
Mineral: Kosmochlor
Image: 1633796534
License: Usage for Mineralienatlas project only
Kosmochlor (Ureyit)

Fundort: Tawmaw, Hpakant Township, Mohnyin District, Kachin State, Myanmar (former Burma); Größe: 0,3 x 2,8 x 2,2 cm
Collection: blackforestmining
Copyright: blackforestmining
Contribution: blackforestmining 2021-10-09
Locality: Tawmaw / Hpakant-Tawmaw Jade-Gangzug / Hpakant Township / Mohnyin, Distrikt / Kachin-Staat / Myanmar (Burma)

You find additional specimen at the Geolitho Museum

Collectors Summary

Color smaragdgrün
Streak color hellgrün
Hardness (Mohs) 6
Crystal System monoklin, C2/c

Chemism

Chemical formula

NaCr3+Si2O6

Chemical composition

Chrom, Natrium, Silicium, Sauerstoff

Unit weight: 227.1535702 u; Number of atoms in the formula: 10

Info

Empirical formula:

NaCrSi2O6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

42.26

6

60.00

15.9994300

95.9965800
Sodium

Na

10.12

1

10.00

22.9897702

22.9897702
Silicon

Si

24.73

2

20.00

28.0855300

56.1710600
Chromium

Cr

22.89

1

10.00

51.9961600

51.9961600

Analysis wt%

Ø SiO2 : 54.81, Al2O3 : 4.02, Fe2O3 : 3.61, Cr2O3 : 23.67, MgO : 0.49, CaO : 0.54, Na2O : 12.94 (Ref: American Mineralogist 84)

Strunz 9th edition incl. updates

9.DA.25

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
A: Ketten- und Bandsilikate mit 2 periodischen Ketten SiO6; Pyroxen-Familie
25:Na Klinopyroxene; Jadeit-Gruppe

Lapis Classification

VIII/F.01-170

VIII: SILIKATE
F: Ketten- und Bandsilikate
1: Zweierketten [Si2O6] 4-; Pyroxen-Gruppe; Klinopyroxene

Classification by Hölzel

9.DD.300

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
D: Jadeite-Group

Dana 8th edition

65.01.03c.04

65: Inosilicate Minerals
01: Inosilicates Inosilicate Single-Width Unbranched Chains, W=1 with chains P=2
03c: C2/c clinopyroxenes (Na clinopyroxenes)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Pyroxene group  ⇒ Clinopyroxene group

Optical Properties

Color

smaragdgrün

Streak color

hellgrün

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.02
Birefringence chart\! Kosmochlor title=Birefringence chart Kosmochlor

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

1.72

RI value β

1.73

RI value γ / ε

1.74

Ri mean

1.730

2V angle

Biaxial (-) 70°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell parameters a (Å)

9.533

Cell parameters b (Å)

8.678

Cell parameters c (Å)

5.265

Cell parameters a/b or c/a

1.099

Cell parameters c/b

0.607

Cell parameters α

90°

Cell parameters β

107.50

Cell parameters γ

90°

Z

4

Volume (ų)

415.401

X-Ray Powder Diffraction

6.31(60),
4.360(30),
2.959(100),
2.879(50),
2.523(30),
2.517(40),
2.457(30),
2.100(20)
XRD chart Kosmochlor

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)

6

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.6

3.632 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Mexiko/Distrito Federal (Mexiko-Stadt)/Jiquipilco (Xiquipilco), Municipio/Toluca-Meteorit

Preface

Author (Name, Year)

Laspeyres, 1897

References

Rock-forming Minerals (Deer, Howie & Zussmann), 2nd ed., 2A (1978), 520

IMA group assignments

Other languages

Spanish

Cosmocloro

French

Kosmochlor

German

Kosmochlor

English

Kosmochlor

Russian

Космохлор

Simplified Chinese

陨铬石

Alternative Name

Chrome-Acmite

Italian

Cloromelanitite

Cosmochlore

English

Kosmochromit

Ureyit

English

Ureyite

Simplified Chinese

钠铬辉石

CNMNC (IMA)-Number

IMA 1965-007

CNMNC symbol

Symbol

Kos

Locations with GPS information

IDs

GUSID (Global unique identifier short form) J2nF3eH-PU2ZbWbSfsg3Ow
GUID (Global unique identifier) DDC56927-FEE1-4D3D-996D-66D27EC8373B
Database ID 2039