Argentojarosite Mineral Data

Argentojarosite Mineral Data +

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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.

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 PyramidalH-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

Diaphaniety:

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

Optical Data:

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

Calculated Properties of Argentojarosite

Electron Density:

r_electron=3.53 gm/cc
note: r_{Argentojarosite}=3.66 gm/cc.

Fermion Index

Fermion Index = 0.00727
Boson Index = 0.99273

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Argentojarosite is Not Radioactive

Argentojarosite Classification

Dana Class:

30.2.5.5 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.2)where (A B)2 XO4 Zq

(30.2.5)Alunite Group (Jarosite Subgroup)

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

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

30.2.5.3 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

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

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

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

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

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

Strunz Class:

VI/B.11-90 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations

VI/B.11 - Alunite group, Natroalunite - Jarosite - Beaverite

VI/B.11-10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-20 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig

VI/B.11-30 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-40 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-43 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-45 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-50 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-60 Jarosite KFe3(SO4)2(OH)6 R 3 3

VI/B.11-65 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-70 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-80 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-90 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-100 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

VI/B.11-110 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m

VI/B.11-120 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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

Argentojarosite

AgFe+++3(SO4)2(OH)6
Dana No: 30.2.5.5 Strunz No: VI/B.11-90
Locality:

Notes: