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Potassic-chloro-pargasite

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Kalium-Chlor-Pargasit
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Kalium-Chlor-Pargasit

dunkelgrün-schwarze Kristalle von Kalium-Chlor-Pargasit, Samson Skarn, Kiyalykh-Uzen, Krasnojarsk, Russland; BB 4 cm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-22
Locality: Kiyalykh-uzen Cu-Mo-Lagerstätte / Chakassien / Krasnojarsk, Region (Krasnojarski krai) / Sibirien, Föderationskreis / Russland

Collectors Summary

Color schwarz
Lustre Glasglanz
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

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

Chem­ical com­po­si­tion

Aluminium, Calcium, Chlor, Eisen, Magnesium, Natrium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 914.3330136 u; Number of atoms in the formula: 40.5

Info

Empirical formula:

(K0.75Na0.25)Ca2(Mg0.75Fe0.25)4(Al0.75Fe0.25)[(Cl0.75(OH)0.25)AlSi3O11]2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.06

0.5

1.23

1.0079470

0.5039735

Oxygen

O

39.37

22.5

55.56

15.9994300

359.9871750

Sodium

Na

0.63

0.25

0.62

22.9897702

5.7474426

Magnesium

Mg

7.97

3

7.41

24.3050600

72.9151800

Aluminium

Al

8.12

2.75

6.79

26.9815382

74.1992301

Silicon

Si

18.43

6

14.81

28.0855300

168.5131800

Chlorine

Cl

5.82

1.5

3.70

35.4532000

53.1798000

Potassium

K

3.21

0.75

1.85

39.0983100

29.3237325

Calcium

Ca

8.77

2

4.94

40.0784000

80.1568000

Iron

Fe

7.63

1.25

3.09

55.8452000

69.8065000

Anal­y­sis wt%

Ø SiO2 : 38.71, Al2O3 : 15.05, FeO : 16.63, MgO : 9.08, CaO : 11.41, Na2O : 1.22, K2O : 3.03, Cl : 4.33, H2O : 0.84 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 2002)

Strunz 9th edi­tion incl. updates

9.DE.15

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

Lapis Clas­sifica­tion

VIII/F.10-127

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

Clas­sifica­tion by Hölzel

9.DH.330

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

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

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

Optical Properties

Color

schwarz

Diaphane­ity (Trans­parency)

opak

Lus­tre

Glasglanz

max. Birefrin­gence

0.015

Birefringence chart\! Potassic-chloro-pargasite title=Birefringence chart Potassic-chloro-pargasite

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

1.675

RI value β

1.687

RI value γ / ε

1.690

Ri mean

1.684

2V angle

Biaxial (-) 65° (gemessen) 53° (berechnet)

Pleochro­ism

hellgrau bis dunkelgrün

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.843

Cell param­e­ters b (Å)

18.130

Cell param­e­ters c (Å)

5.362

Cell param­e­ters a/b or c/a

0.543

Cell param­e­ters c/b

0.296

Cell param­e­ters α

90°

Cell param­e­ters β

105.50

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

922.067

X-Ray Pow­der Diffrac­tion

8.42(80),
3.116(30),
2.951(30),
2.714(100),
2.562(70),
1.444(30)

XRD chart Potassic-chloro-pargasite

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

Physical Properties

VHN (Hard­ness Vick­ers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.29 (gemessen) 3.35 (berechnet)

3.293 ( ρ calc. Mineralienatlas )

Preface

Name from

K-Cl-Analog von Pargasite

Author (Name, Year)

Chukanov & Konilov & Zadov & Belakovskiy & Pekov, 2002

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 131 (2002) (2), 58

IMA group assignments

Other languages

German

Kalium-Chlor-Pargasit

English

Potassic-chloro-pargasite

Russian

Калийхлорпаргасит

Traditional Chinese

鉀氯閃石

Simplified Chinese

钾氯闪石

old name

English

Chloro-potassicpargasite

English

Chloropotassicpargasite

CNMNC symbol

Symbol

Pcprg

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

German pages

DeWikiPedia - search for: Kalium-Chlor-Pargasit
Google-Bilder-Suche - search for: Kalium-Chlor-Pargasit
Mineralienatlas.de (Forum) - search for: Kalium-Chlor-Pargasit

English pages

Mindat - search for: Potassic-chloro-pargasite
Webmineral - search for:Potassic-chloro-pargasite
Handbook-of-Mineralogy - search for: Potassic-chloro-pargasite
RRUFF - Raman, XRD and other mineral data - search for: Potassic-chloro-pargasite
RRUFF - References and PDF downloads - search for: Potassic-chloro-pargasite
American-Mineralogist-Crystal-Structure-Database - search for: Potassic-chloro-pargasite
Strahlen.org - search for: Potassic-chloro-pargasite

Russian pages

Webmineral.ru - search for: Калийхлорпаргасит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Kalium-Chlor-Pargasit
Crystal-Treasure.com - search for: Kalium-Chlor-Pargasit
Bosse - search for: Kalium-Chlor-Pargasit
Edelsteine Neuburg - Gundolf Fischer - search for: Kalium-Chlor-Pargasit