Kerstenite Mineral Data

Kerstenite Mineral Data

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General Kerstenite Information

Chemical Formula:

PbSeO4 (?)

Composition:

Molecular Weight = 350.16 gm

Lead 59.17 % Pb 63.74 % PbO

Selenium 22.55 % Se 36.26 % SeO₃

Oxygen 18.28 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb(SeO₄)

IMA Status:

Not Approved IMA

Locality:

Link to MinDat.org Location Data.

Kerstenite Image

Images:

Kerstenite Clinochalcomenite Krutaite

Comments: Tan opaque fibrous kerstenite with possible blue clinochalcomenite on dark krutaite.
Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kerstenite Crystallography

Axial Ratios:

a:b:c =0.7812:1:1.2045

Cell Dimensions:

a = 5.5, b = 7.04, c = 8.48, Z = 4; V = 328.35 Den(Calc)= 7.08

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

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

By Intensity(I/I_o): 3.03(1), 3.25(0.75), 3.36(0.75),

Physical Properties of Kerstenite

Cleavage:

[???] Indistinct

Color:

Colorless, Greenish yellow, Yellow.

Density:

7.08

Diaphaniety:

Transparent

Hardness:

3.5 - Copper Penny

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Kerstenite

Gladstone-Dale:

CI meas= 0.05 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.137,KPDmeas= 0.137,KC= 0.1442

Optical Data:

Biaxial (?), a=1.96, g=1.98, bire=0.0200, 2V(Meas)=50.

Calculated Properties of Kerstenite

Electron Density:

r_electron=5.98 gm/cc
note: r_Kerstenite=7.08 gm/cc.

Fermion Index

Fermion Index = 0.14799
Boson Index = 0.85201

Photoelectric:

PE_Kerstenite=1,093.36 barns/electron
U=PE_Kerstenite x r_electron=6,543.73 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kerstenite is Not Radioactive

Kerstenite Classification

Dana Class:

37.0.0.0 (37)Phosphate Minerals

(37.0)Without Dana Classification Numbers

(Selenate)

Strunz Class:

VI/A.09-40 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/A - Waterfree sulfates [SO4]2- without unfamiliar anions. cations of very big size

VI/A.09 - Barite group

VI/A.09-10 Celestine SrSO4 Pbnm 2/m 2/m 2/m

VI/A.09-20 Barite BaSO4 Pbnm 2/m 2/m 2/m

VI/A.09-30 Hashemite Ba(Cr,S)O4 P nma 2/m 2/m 2/m

VI/A.09-40 Kerstenite PbSeO4(?) P nma 2/m 2/m 2/m

VI/A.09-50 Anglesite PbSO4 Pbnm 2/m 2/m 2/m

Other Kerstenite 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 Kerstenite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris

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Kerstenite

PbSeO4 (?)
Dana No: Unknown Strunz No: VI/A.09-40
Locality:

Notes: