Ammoniojarosite Mineral Data + Say AMMONIOJAROSITE

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General Ammoniojarosite Information

Help on Chemical  Formula: Chemical Formula: (NH4)Fe+++3(SO4)2(OH)6
Help on Composition: Composition: Molecular Weight = 479.75 gm
   Iron      34.92 %  Fe   49.93 % Fe2O3
   Hydrogen   0.84 %  H      -   % Calc as (NH4)2O
   Hydrogen   1.26 %  H    11.27 % H2O
   Sulfur    13.37 %  S    33.38 % SO3
   Nitrogen   2.92 %  N     5.43 % (NH4)2O
   Oxygen    46.69 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)Fe3+3(SO4)2(OH)6
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1927
Help on Locality: Locality: Link to MinDat.org Location Data.
 

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Ammoniojarosite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.36111
Help on Cell Dimensions: Cell Dimensions: a = 7.2, c = 17, Z = 3; V = 763.21 Den(Calc)= 3.13
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.1(1), 5.1(0.6), 1.99(0.4),
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Physical Properties of Ammoniojarosite

Help on Color: Color: Yellow.
Help on Density: Density: 3.02
Help on Diaphaniety: Diaphaniety: Transparent
Help on Hardness: Hardness: 3.5-4.5 - Between Copper Penny and Fluorite-Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: light yellow
 

Optical Properties of Ammoniojarosite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2476,KPDmeas= 0.2566,KC= 0.2547
Help on Optical Data: Optical Data: Uniaxial (-), e=1.75, w=1.8, bire=0.0500.
 

Calculated Properties of Ammoniojarosite

Help on Electron Density: Electron Density:

relectron=3.01 gm/cc
note: rAmmoniojarosite =3.02 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.03772
Boson Index = 0.96228
Help on Photoelectric: Photoelectric:

PEAmmoniojarosite = 11.07 barns/electron
U=PEAmmoniojarosite x relectron= 33.31 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ammoniojarosite is Not Radioactive

 

Ammoniojarosite Classification

Help on  Dana Class: Dana Class: 30.2.5.4 (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
Help on  Strunz Class: Strunz Class: VI/B.11-70 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 Ammoniojarosite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Ammoniojarosite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Ammoniojarosite

(NH4)Fe+++3(SO4)2(OH)6
Dana No: 30.2.5.4 Strunz No: VI/B.11-70
Locality:

 

Notes:

 

 
   
 
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