Argentojarosite Mineral Data

General Argentojarosite Information

Chemical Formula:

AgFe+++3(SO4)2(OH)6

Composition:

Molecular Weight = 569.58 gm

Iron 29.41 % Fe 42.06 % Fe₂O₃

Silver 18.94 % Ag 20.34 % Ag₂O

Hydrogen 1.06 % H 9.49 % H₂O

Sulfur 11.26 % S 28.11 % SO₃

Oxygen 39.33 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

AgFe³⁺₃(SO₄)₂(OH)₆

Environment:

Secondary mineral derived from the oxidation of sulfide and silver-bearing sulfide minerals.

IMA Status:

Valid Species (Pre-IMA) 1923

Locality:

Tintic mine, East Tintic District, Utah County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the silver content and relationship to jarosite.

Name Pronunciation:

Argentojarosite + Pronunciation

Argentojarosite Image

Images:

Argentojarosite

Comments: Yellow crystalline massive argentojarosite.
Location: Eagle Mine, Juab County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Argentojarosite Crystallography

Axial Ratios:

a:c = 1:2.25578

Cell Dimensions:

a = 7.35, c = 16.58, Z = 3; V = 775.69 Den(Calc)= 3.66

Crystal System:

Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.06(1), 5.98(0.5), 3.68(0.3),

Physical Properties of Argentojarosite

Cleavage:

{???} Perfect

Color:

Brown, Yellow, Yellow brown.

Density:

3.66

Diaphaneity:

Transparent to Translucent

Habit:

Micaceous - Platy texture with "flexible" plates.

Hardness:

3.5-4.5 - Between Copper Penny and Fluorite-Apatite

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

yellow

Optical Properties of Argentojarosite

Gladstone-Dale:

CI meas= 0.084 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.084 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2277,KPDmeas= 0.2277,KC= 0.2487
Ncalc = 1.91

Optical Data:

Uniaxial (-), e=1.785, w=1.882, bire=0.0970.

Calculated Properties of Argentojarosite

Electron Density:

Bulk Density (Electron Density)=3.53 gm/cc
note: Specific Gravity of Argentojarosite =3.66 gm/cc.

Fermion Index:

Fermion Index = 0.0072707594
Boson Index = 0.9927292406

Photoelectric:

PE_{Argentojarosite}= 54.31 barns/electron
U=PE_{Argentojarosite} x rElectron Density= 191.93 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Argentojarosite is Not Radioactive

Argentojarosite Classification

Dana Class:

30.02.05.05 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.02)where (A B)2 XO4 Zq

(30.02.05)Alunite Group (Jarosite Subgroup)

30.02.05.01 Jarosite KFe3(SO4)2(OH)6 R 3 3

30.02.05.02 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

30.02.05.03 Hydroniumjarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

30.02.05.04 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

30.02.05.05 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

30.02.05.06 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

30.02.05.07 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

30.02.05.08 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

Strunz Class:

07.BC.10 07 - SULFATES (SELENATES, TELLURATES)

07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O

07.BC -With medium-sized and large cations

07.BC.10 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig

07.BC.10 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

07.BC.10 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Jarosite KFe3(SO4)2(OH)6 R 3 3

07.BC.10 Hydroniumjarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

07.BC.10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m

07.BC.10 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

07.BC.10 Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 R 3m 3 2/m

07.BC.10 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m

Other Argentojarosite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Argentojarosite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Argentojarosite Specimen Label here :

Argentojarosite

AgFe+++3(SO4)2(OH)6
Dana No: 30.02.05.05 Strunz No: 07.BC.10
Locality:

Notes:

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