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Argentojarosite (Argentojarosit)

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Argentojarosit
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Argentojarosit
Fundort: Christiana Mine, Revier Kamariza, Lavrion, Griechenland; Bildbreite: 8 mm
Copyright: UlrichW; Contribution: Klinoklas
Location: Griechenland/Attika (Attikí, Attica)/East Attica/Lavreotiki/Lavrion (Laurion), Bergbaudistrikt/Agios Konstantinos (Kamariza)/Mercati Minen/Christiana Mine
Mineral: Argentojarosite
Image: 1179752781
Rating: 6 (votes: 2)
License: Usage for Mineralienatlas project only
Argentojarosit

Fundort: Christiana Mine, Revier Kamariza, Lavrion, Griechenland; Bildbreite: 8 mm
Copyright: UlrichW
Contribution: Klinoklas 2007-05-21
Locality: Christiana Mine / Mercati Minen / Agios Konstantinos (Kamariza) / Lavrion (Laurion), Bergbaudistrikt / Lavreotiki / East Attica / Attika (Attikí, Attica) / Griechenland

Collectors Summary

Color braun, gelb, gelbbraun
Streak color gelb
Hardness (Mohs) 2.75
Solubility +++ Säuren
Crystal System trigonal, R3m

Chemism

Chemical formula

AgFe3+3(SO4)2(OH)6

Chemical composition

Eisen, Silber, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 569.574522 u; Number of atoms in the formula: 26

Info

Empirical formula:

AgFe3(SO4)2(OH)6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.06

6

23.08

1.0079470

6.0476820
Oxygen

O

39.33

14

53.85

15.9994300

223.9920200
Sulfur

S

11.26

2

7.69

32.0655000

64.1310000
Iron

Fe

29.41

3

11.54

55.8452000

167.5356000
Silver

Ag

18.94

1

3.85

107.8682200

107.8682200

Analysis wt%

Ag2O : 18.00, K2O : 0.42, PbO : 0.61, Fe2O3 : 43.07, SO3 : 28.15, H2O : 9.81 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

7.BC.10

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
B: Sulfate (Selenate, etc.) mit weitere Anionen, ohne H2O
C: Mit mittelgroßen und großen [Kationen]
10:Alunit-Gruppe

Lapis Classification

VI/B.11-090

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
B: Wasserfreie Sulfate, mit fremden Anionen
11: Große Kationen vorwiegend; Alunit-Gruppe

Classification by Hölzel

7.BB.160

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
B: Sulfates (+Anions -Water)
B: Alunite-Group (sulfatian)
1: Alunites with alkalies, Ag, Tl

Dana 8th edition

30.02.05.05

30: Anhydrous Sulfates Containing Hydroxyl or Halogen
02: Anhydrous Sulfates Containing Hydroxyl or Halogen where (A B)2 XO4 Zq
05: Alunite Group (Jarosite Subgroup)

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Alunite supergroup  ⇒ Alunite group with -1c

Optical Properties

Color

braun, gelb, gelbbraun

Streak color

gelb

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.100
Birefringence chart\! Argentojarosite title=Birefringence chart Argentojarosite

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

1.890

RI value γ / ε

1.790

Ri mean

1.857

2V angle

Uniaxial (-)

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

166

Space Group

R3m

Cell parameters a (Å)

7.347

Cell parameters b (Å)

-

Cell parameters c (Å)

16.580

Cell parameters a/b or c/a

2.257

Cell parameters c/b

-

Z

3

Volumne (ų)

775.06

X-Ray Powder Diffraction

5.98(50),
3.681(30),
3.127(20),
3.062(100),
2.763(20),
2.524(30),
2.218(30),
1.979(20)
XRD chart Argentojarosite

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)

2.75

VHN (Hardness Vickers)

68 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.66

3.661 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

USA/Utah/Utah Co./Tintic District/Tintic Standard Mine (No.1, 2, 3)

Preface

Author (Name, Year)

Schaller, 1923

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 33

IMA group assignments

Other languages

German

Argentojarosit

Spanish

Argentojarosita

French

Argentojarosite

English

Argentojarosite

Russian

Аргентоярозит

Simplified Chinese

辉银黄钾铁矾

Alternative Name

Argento-jarosite

CNMNC symbol

Symbol

Agjrs

Locations with GPS information