Plumbojarosite Mineral Data

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General Plumbojarosite Information

Chemical Formula:

PbFe+++6(SO4)4(OH)12

Composition:

Molecular Weight = 1,130.62 gm

Iron 29.64 % Fe 42.37 % Fe₂O₃

Hydrogen 1.07 % H 9.56 % H₂O

Lead 18.33 % Pb 19.74 % PbO

Sulfur 11.34 % S 28.33 % SO₃

Oxygen 39.62 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbFe³⁺₆(SO₄)₄(OH)₁₂

Environment:

Secondary mineral in the oxidized zone of lead-bearing ore deposits.

IMA Status:

Valid Species (Pre-IMA) 1902

Locality:

Cooks Pead district, Luna County, New Mexico. Link to MinDat.org Location Data.

Name Origin:

Named after its chemical composition (a variety of jarosite with Pb replacing K).

Name Pronunciation:

Plumbojarosite + Pronunciation

Synonym:

ICSD 64729

PDF 18-698

Plumbojarosite Image

Images:

Click Here for Larger Plumbojarosite Image

Plumbojarosite Galena

Comments: Yellow, earthy plumbojarosite on massive, gray galena.
Location: Quarry No 3, Königshain, Oberlausitz, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Plumbojarosite Crystallography

Axial Ratios:

a:c = 1:4.619

Cell Dimensions:

a = 7.315, c = 33.788, Z = 3; V = 1,565.75 Den(Calc)= 3.60

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 3.066(1), 5.933(0.95), 1.829(0.7),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Szymanski J T , The Canadian Mineralogist , 23 (1985) p.659-668, The crystal structure of plumbojarosite Pb[Fe3(SO4)2(OH)6]2

Physical Properties of Plumbojarosite

Cleavage:

{0001} Distinct

Color:

Yellowish brown, Dark brown, Golden brown.

Density:

3.6 - 3.67, Average = 3.63

Diaphaneity:

Translucent to subtranslucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Concretionary - Rounded massive fine-grained materials.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

1.5-2 - Talc-Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Dull

Streak:

pale brown

Optical Properties of Plumbojarosite

Dichroism (e):

none.

Dichroism (w):

none.

Gladstone-Dale:

CI meas= 0.057 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.048 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2307,KPDmeas= 0.2285,KC= 0.2424
Ncalc = 1.87 - 1.89

Optical Data:

Uniaxial (-), e=1.783, w=1.878, bire=0.0950.

Calculated Properties of Plumbojarosite

Electron Density:

Bulk Density (Electron Density)=3.43 gm/cc
note: Specific Gravity of Plumbojarosite =3.60 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_{Plumbojarosite}= 305.43 barns/electron
U=PE_{Plumbojarosite} x rElectron Density=1,046.41 barns/cc.

Radioactivity:

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

Plumbojarosite Classification

Dana Class:

30.02.05.06 (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 Plumbojarosite Information

References:

NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Plumbojarosite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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

Plumbojarosite

PbFe+++6(SO4)4(OH)12
Dana No: 30.02.05.06 Strunz No: 07.BC.10
Locality:

Notes: