Jamesite Mineral Data

Jamesite Mineral Data +

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General Jamesite Information

Chemical Formula:

Pb2Zn2Fe+++5(AsO4)5O4

Composition:

Molecular Weight = 1,583.01 gm

Zinc 8.26 % Zn 10.28 % ZnO

Iron 17.64 % Fe 25.22 % Fe₂O₃

Arsenic 23.66 % As 36.30 % As₂O₅

Lead 26.18 % Pb 28.20 % PbO

Oxygen 24.26 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₂Zn₂Fe³⁺₅(AsO₄)₅O₄

IMA Status:

Approved IMA 1981

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 87744

PDF 35-509

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Jamesite Crystallography

Axial Ratios:

a:b:c =0.586:1:1.0715

Cell Dimensions:

a = 5.622, b = 9.593, c = 10.279, Z = 1; alpha = 109.8°, beta = 90.54°, gamma = 97.69° V = 516.88 Den(Calc)= 5.09

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 3.4(1), 3.04(0.9), 9.67(0.8),

Crystal Structure:

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Cooper M A , Hawthorne F C , The Canadian Mineralogist , 37 (1999) p.53-60

Physical Properties of Jamesite

Color:

Reddish brown.

Density:

5.1

Hardness:

3 - Calcite

Luster:

Subadamantine

Optical Properties of Jamesite

Gladstone-Dale:

CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1948,KPDmeas= 0.1944,KC= 0.192

Optical Data:

Biaxial (-), a=1.96, b=1.995, g=2.02, bire=0.0600, 2V(Calc)=78, 2V(Meas)=75.

Calculated Properties of Jamesite

Electron Density:

r_electron=4.58 gm/cc
note: r_Jamesite=5.10 gm/cc.

Fermion Index

Fermion Index = 0.06509
Boson Index = 0.93491

Photoelectric:

PE_Jamesite= 474.52 barns/electron
U=PE_Jamesite x r_electron=2,173.89 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Jamesite is Not Radioactive

Jamesite Classification

Dana Class:

41.11.2.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.11)with miscellaneous formulae

(41.11.2)Dana Group

41.11.2.1 Jamesite Pb2Zn2Fe5(AsO4)5O4 P1 1

Strunz Class:

VII/B.24-70 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb

VII/B.24 - Brackebuschite - Tsumebite group, Bearthite - Jamesite series

VII/B.24-05 Bearthite Ca2Al(PO4)2(OH) P 2₁/m 2/m

VII/B.24-10 Goedkenite (Sr,Ca)2Al(PO4)2(OH) P 2₁/m 2/m

VII/B.24-20 Gamagarite Ba2(Fe,Mn)(VO4)2(OH) P 2₁/m 2/m

VII/B.24-22 Tokyoite! Ba2Mn(VO4)2(OH) P 2₁/m 2/m

VII/B.24-25 Bushmakinite! Pb2Al(PO4)(VO4)(OH) P 2₁/m 2/m

VII/B.24-28 Calderonite! Pb2Fe(VO4)2(OH) P 2₁/m 2/m

VII/B.24-30 Brackebuschite Pb2(Mn,Fe)(VO4)2(OH) P 2₁/m 2/m

VII/B.24-40 Arsenbrackebuschite Pb2(Fe,Zn)(AsO4)2·(H2O) P 2₁/m 2/m

VII/B.24-45 Feinglosite! Pb2(Zn,Fe)[(As,S)O4]2·(H2O) P 2₁,P 2₁/m Mono

VII/B.24-50 Tsumebite Pb2Cu(PO4)(SO4)(OH) P 2₁/m 2/m

VII/B.24-60 Arsentsumebite Pb2Cu(AsO4)(SO4)(OH) P 2₁/m 2/m

VII/B.24-65 Lulzacite! Sr2Fe(Fe,Mg)2Al4(PO4)4(OH)10 P1 1

VII/B.24-70 Jamesite Pb2Zn2Fe5(AsO4)5O4 P1 1

Other Jamesite 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 Jamesite :
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 -École des Mines de Paris

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Jamesite

Pb2Zn2Fe+++5(AsO4)5O4
Dana No: 41.11.2.1 Strunz No: VII/B.24-70
Locality:

Notes: