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Pargasite (Actinolit)

Pictures (35 Images total)

Pargasite
Views (File:
1336724325
): 1331
Pargasite
Very aesthetic specimen of pargasite crystals, that nested on marble matrix rock, from Luc Yen, Yenbai (Yen Bai) Province, Vietnam; Size 80 х 60 х 42 mm
Copyright: pegmatite; Contribution: pegmatite
Collection: pegmatite
Location: Vietnam/Yên Bái, Provinz/Luc Yen, Distrikt
Mineral: Pargasite
Image: 1336724325
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Pargasite

Very aesthetic specimen of pargasite crystals, that nested on marble matrix rock, from Luc Yen, Yenbai (Yen Bai) Province, Vietnam; Size 80 х 60 х 42 mm
Collection: pegmatite
Copyright: pegmatite
Contribution: pegmatite 2012-05-11
Locality: Luc Yen, Distrikt / Yên Bái, Provinz / Vietnam
Pargasit
Views (File:
1274563721
): 5593, Rating: 7.83
Pargasit
Kristallgröße: 1,8 x 0,8 x 0,1 cm, Fundort: Luc Yen, Provinz Yen Bai, Vietnam
Copyright: Dan Weinrich; Contribution: thdun5
Location: Vietnam/Yên Bái, Provinz/Luc Yen, Distrikt
Mineral: Pargasite
Image: 1274563721
Rating: 7.83 (votes: 6)
License: Usage for Mineralienatlas project only
Pargasit

Kristallgröße: 1,8 x 0,8 x 0,1 cm, Fundort: Luc Yen, Provinz Yen Bai, Vietnam
Copyright: Dan Weinrich
Contribution: thdun5 2010-05-22
Locality: Luc Yen, Distrikt / Yên Bái, Provinz / Vietnam
Pargasit
Views (File:
1222504328
): 5889
Pargasit
Größe: 82 x 44 mm; Fundort: Mundarara Mine, Longido, Monduli, Region Arusha, Tansania
Copyright: John Sobolewski; Contribution: slugslayer
Location: Tansania/Arusha, Region/Longido/Mundarara Mine
Mineral: Pargasite
Image: 1222504328
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Pargasit

Größe: 82 x 44 mm; Fundort: Mundarara Mine, Longido, Monduli, Region Arusha, Tansania
Copyright: John Sobolewski
Contribution: slugslayer 2008-09-27
Locality: Mundarara Mine / Longido / Arusha, Region / Tansania
Pargasit auf und in Marmor
Views (File:
1266256116
): 9809
Pargasit auf und in Marmor
Fundort: Ganesh, Hunza-Tal, Gilgit, Pakistan; Größe: 2 x 2 cm
Copyright: Mineralroli; Contribution: Mineralroli
Collection: Alfred Schreilechner
Location: Pakistan/Gilgit-Baltistan (Nordgebiete; Northern Areas)/Hunza-Nagar, Distrikt/Hunza-Tal/Ganesh
Mineral: Pargasite
Rock: marble
Image: 1266256116
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Pargasit auf und in Marmor

Fundort: Ganesh, Hunza-Tal, Gilgit, Pakistan; Größe: 2 x 2 cm
Collection: Alfred Schreilechner
Copyright: Mineralroli
Contribution: Mineralroli 2010-02-15
Locality: Ganesh / Hunza-Tal / Hunza-Nagar, Distrikt / Gilgit-Baltistan (Nordgebiete; Northern Areas) / Pakistan
Pargasit
Views (File:
1331645497
): 5441
Pargasit
Bildbreite: 1,2 mm; Fundort: Pargas (Parainen), Turku-Pori, Länsi-Suomen Lääni, Finnland
Copyright: Enrico Bonacina; Contribution: Hg
Location: Finnland/Varsinais-Suomi, Landschaft/Pargas (Parainen)
Mineral: Pargasite
Image: 1331645497
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Pargasit

Bildbreite: 1,2 mm; Fundort: Pargas (Parainen), Turku-Pori, Länsi-Suomen Lääni, Finnland
Copyright: Enrico Bonacina
Contribution: Hg 2012-03-13
Locality: Pargas (Parainen) / Varsinais-Suomi, Landschaft / Finnland
Pargasit in Chromit
Views (File:
1208248225
): 7093
Pargasit in Chromit
Größe: 8 x 5 x 6 cm; Fundort: Kempirsai Cr-Lagerstätte, Aqtöbe Oblysy, Kasachstan
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Kasachstan/Aqtöbe, Gebiet (Aqtöbe oblysy)/Kempirsai
Mineral: Chromite, Pargasite
Image: 1208248225
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Pargasit in Chromit

Größe: 8 x 5 x 6 cm; Fundort: Kempirsai Cr-Lagerstätte, Aqtöbe Oblysy, Kasachstan
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2008-04-15
Locality: Kempirsai / Aqtöbe, Gebiet (Aqtöbe oblysy) / Kasachstan

You find additional Actinolit specimen at the Geolitho Museum

Collectors Summary

Color bläulichgrün, braun, grauschwarz, hellbraun, dunkelgrün
Streak color weiß
Hardness (Mohs) 5.5
Solubility + HF nur
Crystal System monoklin, C2/m

Chemism

Chemical formula

NaCa2(Mg,Fe2+)4Al(Si6Al2)O22(OH)2

Chemical composition

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

Unit weight: 867.3669588 u; Number of atoms in the formula: 42

Info

Empirical formula:

NaCa2(Mg0.75Fe0.25)4Al(Si6Al2)O22(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

44.27

24

57.14

15.9994300

383.9863200
Sodium

Na

2.65

1

2.38

22.9897702

22.9897702
Magnesium

Mg

8.41

3

7.14

24.3050600

72.9151800
Aluminium

Al

9.33

3

7.14

26.9815382

80.9446146
Silicon

Si

19.43

6

14.29

28.0855300

168.5131800
Calcium

Ca

9.24

2

4.76

40.0784000

80.1568000
Iron

Fe

6.44

1

2.38

55.8452000

55.8452000

Analysis wt%

SiO2 : 41.07, Al2O3 : 17.94, Fe2O3 : 3.59, FeO : 7.79, MgO : 13.37, CaO : 12.05, Na2O : 1.83, H2O : 2.03 (Ref: American Mineralogist 89)

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.10-110

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

Classification by Hölzel

9.DH.300

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

Dana 8th edition

66.01.03a.12

66: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2
01: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2 with P=2 amphibole configuration
03a: Group 2, the calcic amphiboles

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

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

Optical Properties

Color

bläulichgrün, braun, grauschwarz, hellbraun, dunkelgrün

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.022
Birefringence chart\! Pargasite title=Birefringence chart 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

1.613

RI value β

1.618

RI value γ / ε

1.635

Ri mean

1.622

2V angle

Biaxial (+) 23°

Optical Data Luminescence

Color SW-UV (254nm)

  

grünlich

SW-UV Intensity

schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

9.87

Cell parameters b (Å)

18.01

Cell parameters c (Å)

5.30

Cell parameters a/b or c/a

0.548

Cell parameters c/b

0.294

Cell parameters α

90°

Cell parameters β

105.27

Cell parameters γ

90°

Z

2

Volumne (ų)

908.86

Kristall structure

Maxwell C. Day; Frank C. Hawthorne; Umberto Susta; Giancarlo Della Ventura; George E. Harlow: Gem amphiboles from Mogok, Myanmar: crystal-structure refinement, infrared spectroscopy and short-range order–disorder in gem pargasite and fluoro-pargasite. Mineralogical Magazine September Vol.83, Nr. 3 (2019) S. 361-371.

X-Ray Powder Diffraction

8.424(50),
3.359(70),
3.267(70),
3.131(100),
2.922(70),
2.687(70),
2.543(50),
2.341(50)
XRD chart 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

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.069 - 3.181 / Durchschnittlich = 3.12

3.169 ( ρ calc. Mineralienatlas )

Instability

+ HF nur

(Co-)Type locality

(Co-)Type locality

Finnland/Varsinais-Suomi, Landschaft/Pargas (Parainen)

Preface

Author (Name, Year)

von Steinheil, 1814

References

Canadian Mineralogist 39 (2001), 1725

IMA group assignments

 
Amphibole supergroup
 
 
 

 
 
(OH,F,Cl)-dominant amphiboles
 
 
 

 
 
 
Calcium amphiboles
 
 
 

 
 
 
 
Pargasite (Prg) amphiboles
 
 
 

 
 
 
 
 
Chromio-pargasite
NaCa2Mg4Cr(Si6Al2O22)(OH)2
monoklin
C2/m

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

 
 
 
 
 
Fluoro-pargasite
NaCa2(Mg4Al)(Si6Al2)O22F2
monoklin
C2/m

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

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

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

 
 
 
 
 
Potassic-ferro-pargasite
KCa2(Fe2+4Al)Si6Al2O22(OH)2
monoklin
C2/m

 
 
 
 
 
Potassic-fluoro-pargasite
KCa2(Mg4Al)Si6Al2O22F2
monoklin
C2/m

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

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

Refresh list

Actuality: 15. Mar 2023 - 10:23:23

Other languages

German

Pargasit

Spanish

Pargasita

English

Pargasite

French

Pargasite

Russian

Паргасит

Simplified Chinese

韭闪石

Japanese

ﾊﾟｰｶﾞｽ閃石

Alternative Name

Actinolit

Actinolite-asbestos

Actinolithe

Actinolota

Actinote

Actynolin

Actynolit

Actynolita

Actynolite

Attinoto

Carinthine

German

Karinthin

Keraphyllite

Krophyllite

Kérophyllite

Pargasitic hornblende

Stibolit

Stibolita

Stibolite

Stralit

Stralita

Stralite

Zillerthit

Zillerthita

Zillerthite

CNMNC symbol

Symbol

Prg

Locations with GPS information