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Potassic-ferro-pargasite

Pictures (4 Images total)

Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)
Views (Image: 1413887267): 658
Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)

Winzige schwarze Körner von Kalium-Ferro-Pargasit. Bildbreite ca. 2 mm. Fundort: Kabutoichiba, Kameyama, Mie-Präfektur, Honshu, Japan

Copyright: Stefan
Contribution: Stefan 2014-10-21
Locality: Kabutoichiba / Kameyama / Mie, Präfektur / Kinki, Region / Honshu / Japan
Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)
Views (Image: 1413887288): 538
Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)

Winzige schwarze Körner von Kalium-Ferro-Pargasit. Bildbreite ca. 1,5 mm. Fundort: Kabutoichiba, Kameyama, Mie-Präfektur, Honshu, Japan

Copyright: Stefan
Contribution: Stefan 2014-10-21
Locality: Kabutoichiba / Kameyama / Mie, Präfektur / Kinki, Region / Honshu / Japan
Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)
Views (Image: 1413887312): 474
Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)

Winzige schwarze Körner von Kalium-Ferro-Pargasit. Bildbreite ca. 1 mm. Fundort: Kabutoichiba, Kameyama, Mie-Präfektur, Honshu, Japan

Copyright: Stefan
Contribution: Stefan 2014-10-21
Locality: Kabutoichiba / Kameyama / Mie, Präfektur / Kinki, Region / Honshu / Japan
Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)
Views (Image: 1413887350): 516
Kalium-Ferro-Pargasit (Kali-Ferro-Pargasit)

Winzige schwarze Körner von Kalium-Ferro-Pargasit. Bildbreite ca. 1 mm. Fundort: Kabutoichiba, Kameyama, Mie-Präfektur, Honshu, Japan

Copyright: Stefan
Contribution: Stefan 2014-10-21
Locality: Kabutoichiba / Kameyama / Mie, Präfektur / Kinki, Region / Honshu / Japan

Collectors Summary

Color schwarz
Cleavages vollkommen (110)
Fracture uneben
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

KCa2(Fe2+4Al)Si6Al2O22(OH)2

Addi­tional chem. informa­tion

Amphibol Gruppe

A Position: K
C Position: Fe als das dominante divalente Kation und Al als das dominante trivalente Kation.
W Position: OH als das dominante Anion

Chem­ical com­po­si­tion

Aluminium, Calcium, Eisen, Silicium, Kalium, Sauerstoff, Wasserstoff

Anal­y­sis wt%

SiO2 : 38.08, TiO2 : 1.92, Al2O3 : 15.12, Cr2O3 : 0.44, FeO : 19.96, MgO : 6.22, MnO : 0.22, CaO : 11.73, Na2O : 1.57, K2O : 2.74, F : 0.13, H2O : 1.87 (Ref: J.Min.Petr.Sci.2009)

Strunz 9th edi­tion incl. updates

9.DE.

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

Lapis Clas­sifica­tion

VIII/F.10-122

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

Clas­sifica­tion by Hölzel

9.DH.325

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

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

Optical Properties

Color

schwarz

max. Birefrin­gence

0.018

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

1.680

RI value β

1.690

RI value γ / ε

1.698

Ri mean

1.689

2V angle

Biaxial (-) 85°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.937

Cell param­e­ters b (Å)

18.108

Cell param­e­ters c (Å)

5.335

Cell param­e­ters a/b or c/a

0.549

Cell param­e­ters c/b

0.295

Cell param­e­ters α

90°

Cell param­e­ters β

105.30°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

925.952

X-Ray Pow­der Diffrac­tion

8.48(81), 3.40(51), 3.15(46), 2.72(100), 2.61(59), 2.57(43), 2.36(37), 2.17(39)

XRD chart Potassic-ferro-pargasite

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

Crystal Structure 3D

Open larger view

Physical Properties

VHN (Hard­ness Vick­ers)

1004 (100g)

Cleav­ages

vollkommen (110)

Frac­ture

uneben

Tenac­ity

spröde

Preface

Author (Name, Year)

Yasuyuki BANNO, Ritsuro MIYAWAKI, Satoshi MATSUBARA, Eriko SATO, Izumi NAKAI, Gen-ichiro MATSUO und Shigeo YAMADA (2008)

References

Neue Mineralien - IMA-WEB-Seite Feb. 2008

IMA group assignments

Other languages

German

Kalium-Ferro-Pargasit

Spanish

Potasio-ferro-pargasita

English

Potassic-ferro-pargasite

Russian

Калийферропаргасит

Japanese

カリ鉄パーガス閃石

Alternative Name

German

Kali-Ferro-Pargasit

English

Potassicferropargasite

CNMNC (IMA)-Number

IMA 2007-053

CNMNC symbol

Symbol

Pfprg

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Калийферропаргасит

Mineral Dealer

German pages

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

Locations with GPS information