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Chromio-pargasite

Pictures (2 Images total)

Chrom-Pargasit
Views (File:
1386157863
): 1287
Chrom-Pargasit
grüner Chrom-Pargasit (5 mm Länge des Kristalls); bräunlich Chlorit ohne Chrom; violett Chlorit mit Cr-Anteil; Akaishi Mine, Berg Higashi-Akaishiyama, Besshiyama, Niihama Stadt, Ehime Präfektur, Shikoku, Japan
Copyright: Daisuke NISHIO-HAMANE; Contribution: Stefan
Location: Japan/Shikoku (Schikoku), Insel/Ehime, Präfektur/Niihama, Stadt/Besshiyama/Higashi-Akaishiyama, Berg/Akaishi Mine
Mineral: Chromio-pargasite
Image: 1386157863
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
Chrom-Pargasit

grüner Chrom-Pargasit (5 mm Länge des Kristalls); bräunlich Chlorit ohne Chrom; violett Chlorit mit Cr-Anteil; Akaishi Mine, Berg Higashi-Akaishiyama, Besshiyama, Niihama Stadt, Ehime Präfektur, Sh...

Copyright: Daisuke NISHIO-HAMANE
Contribution: Stefan 2013-12-04
Locality: Akaishi Mine / Higashi-Akaishiyama, Berg / Besshiyama / Niihama, Stadt / Ehime, Präfektur / Shikoku (Schikoku), Insel / Japan
Chrom-Pargasit
Views (File:
1386157454
): 902
Chrom-Pargasit
grüner Chrom-Pargasit; Akaishi Mine, Berg Higashi-Akaishiyama, Besshiyama, Niihama Stadt, Ehime Präfektur, Shikoku, Japan
Copyright: Daisuke NISHIO-HAMANE; Contribution: Stefan
Location: Japan/Shikoku (Schikoku), Insel/Ehime, Präfektur/Niihama, Stadt/Besshiyama/Higashi-Akaishiyama, Berg/Akaishi Mine
Mineral: Chromio-pargasite
Image: 1386157454
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Chrom-Pargasit

grüner Chrom-Pargasit; Akaishi Mine, Berg Higashi-Akaishiyama, Besshiyama, Niihama Stadt, Ehime Präfektur, Shikoku, Japan

Copyright: Daisuke NISHIO-HAMANE
Contribution: Stefan 2013-12-04
Locality: Akaishi Mine / Higashi-Akaishiyama, Berg / Besshiyama / Niihama, Stadt / Ehime, Präfektur / Shikoku (Schikoku), Insel / Japan

Collectors Summary

Crystal System monoklin, C2/m

Chemism

Chemical formula

NaCa2Mg4Cr(Si6Al2O22)(OH)2

Additional chem. information

Amphibol-Gruppe

Chemical composition

Aluminium, Calcium, Chrom, Magnesium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 860.8414406 u; Number of atoms in the formula: 42

Info

Empirical formula:

NaCa2Mg4Cr(Si6Al2O22)(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.23

2

4.76

1.0079470

2.0158940

Oxygen

O

44.61

24

57.14

15.9994300

383.9863200

Sodium

Na

2.67

1

2.38

22.9897702

22.9897702

Magnesium

Mg

11.29

4

9.52

24.3050600

97.2202400

Aluminium

Al

6.27

2

4.76

26.9815382

53.9630764

Silicon

Si

19.58

6

14.29

28.0855300

168.5131800

Calcium

Ca

9.31

2

4.76

40.0784000

80.1568000

Chromium

Cr

6.04

1

2.38

51.9961600

51.9961600

Strunz 9th edition incl. updates

9.DE.10

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
E: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Klinoamphibole
10:Amphibole: Ca

Lapis Classification

VIII/F.10-121

VIII: SILIKATE
F: Ketten- und Bandsilikate
10: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Ca2-Amphibole

Classification by Hölzel

9.DH.405

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
H: Amphiboles; Calcic Amphiboles
4: Hastingsite-Group

IMA status

anerkannt - CNMNC - New minerals and nomenclature modifications approved in Jun. 2011

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Calcium amphiboles  ⇒ Pargasite (Prg) amphiboles

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

9.918

Cell parameters b (Å)

18.006

Cell parameters c (Å)

5.287

Cell parameters a/b or c/a

0.551

Cell parameters c/b

0.294

Cell parameters α

90°

Cell parameters β

105.40

Cell parameters γ

90°

Z

2

Volume (ų)

910.271

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

3.369(58), 2.932(43), 2.697(81), 2.585(50), 2.546(100), 2.346(42), 2.156(35), 1.514(55)

XRD chart Chromio-pargasite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.141 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Japan/Shikoku (Schikoku), Insel/Ehime, Präfektur/Niihama, Stadt/Besshiyama/Higashi-Akaishiyama, Berg

Japan/Shikoku (Schikoku), Insel/Ehime, Präfektur/Niihama, Stadt/Besshiyama/Higashi-Akaishiyama, Berg/Akaishi Mine

Type material

Nationalaes Museum der Natur und Wissenschaften, Tokyo, Japan

Collection number of type material

NSM M-41160

Preface

Author (Name, Year)

Daisuke Nishio-Hamane, Masayuki Ohnishi, Tetsuo Minakawa, Junichi Yamaura, Shohei Saito and Ryo Kadota (2011)

References

Nishio-Hamane, D., Ohnishi, M., Minakawa, T., Yamaura, J., Saito, S. and Kadota, R. (2011) Ehimeite, IMA 2011-023. CNMNC Newsletter No. 10, October 2011, page 2553;

IMA group assignments



 
 
 
 
 
 


 
 
 
 
 
NaCa2Mg4Cr(Si6Al2O22)(OH)2
monoklin
C2/m

 
 
 
 
 
NaCa2(Fe2+,Mg)4Al(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
NaCa2(Mg4Al)(Si6Al2)O22F2
monoklin
C2/m

 
 
 
 
 
NaCa2(Mg4Mn3+)(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
NaCa2(Mg,Fe2+)4Al(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
(K,Na)Ca2(Mg,Fe2+)4(Al,Fe3+)[(Cl,OH)|AlSi3O11]2
monoklin
C2/m

 
 
 
 
 
KCa2(Fe2+4Al)Si6Al2O22(OH)2
monoklin
C2/m

 
 
 
 
 
KCa2(Mg4Al)Si6Al2O22F2
monoklin
C2/m

 
 
 
 
 
(K,Na)Ca2(Mg,Fe2+)4Al(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
NaCa2(Mg4V)[Si6Al2]O22(OH)2
monoklin
C2/m

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Actuality: 22. Apr 2024 - 11:13:38

Other languages

German

Chromio-Pargasit

English

Chromio-pargasite

Russian

Хромиопаргасит

Japanese

愛媛閃石

old name

German

Ehimeit

English

Ehimeite

Alternative Name

German

Chromiopargasit

Lapis

CNMNC (IMA)-Number

IMA 2011-023

CNMNC symbol

Symbol

Cprg

Locations with GPS information

IDs

GUSID (Global unique identifier short form) OYAb_SR4wUK4zw8H2ic0xA
GUID (Global unique identifier) FD1B8039-7824-42C1-B8CF-0F07DA2734C4
Database ID 7032