Poitevinite Mineral Data

Poitevinite Mineral Data +

General Poitevinite Information

Chemical Formula:

(Cu,Fe++,Zn)SO4·(H2O)

Composition:

Molecular Weight = 175.50 gm

Zinc 3.73 % Zn 4.64 % ZnO

Iron 9.55 % Fe 12.28 % FeO

Copper 21.73 % Cu 27.20 % CuO

Hydrogen 1.15 % H 10.27 % H₂O

Sulfur 18.27 % S 45.62 % SO₃

Oxygen 45.58 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu_0.6Fe²⁺_0.3Zn_0.1(SO₄)·(H₂O)

IMA Status:

Approved IMA 1964

Locality:

Hat Creek, Bonaparte River, Lillooet, British Columbia, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for Theophile Eugene Poitevin (1888-1978), Canadian mineralogist, Geological Survey of Canada.

Synonym:

ICSD 79163

PDF 15-120

Poitevinite Image

Images:

Poitevinite

Comments: Pale brown powdery poitevinite mass with pale blue chalcanthite.
Location: Bonaparte River, Kamloops District, British Columbia, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Poitevinite Crystallography

Axial Ratios:

a:b:c =0.9922:1:1.4602

Cell Dimensions:

a = 5.12, b = 5.16, c = 7.535, Z = 2; alpha = 107.06°, beta = 107.4°, gamma = 92.73° V = 181.39 Den(Calc)= 3.21

Crystal System:

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

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

By Intensity(I/I_o): 3.46(1), 3.08(0.5), 4.72(0.5),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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Giester G , Lengauer C L , Redhammer G J , The Canadian Mineralogist , 32 (1994) p.873-884, Characterization of the FeSO4.H2O - CuSO4.H2O solid solution series, and the, nature of poitevinite, (Cu,Fe)SO4.H2O, Sample: Fe-100

View Additional jPOWD Structure files for Poitevinite
[1] [2]

Physical Properties of Poitevinite

Cleavage:

None

Color:

Pink, Light red.

Density:

3.3

Diaphaniety:

Transparent to Translucent

Habit:

Powdery - Forms a loose, poorly-coherent pulverulent mass.

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Poitevinite

Gladstone-Dale:

CI meas= -0.048 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.078 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2073,KPDmeas= 0.2016,KC= 0.1923

Optical Data:

Biaxial (+), a=1.626, b=1.671, g=1.699, bire=0.0730, 2V(Calc)=74, 2V(Meas)=75.

Calculated Properties of Poitevinite

Electron Density:

r_electron=3.24 gm/cc
note: r_Poitevinite=3.30 gm/cc.

Fermion Index

Fermion Index = 0.00514
Boson Index = 0.99486

Photoelectric:

PE_Poitevinite= 15.11 barns/electron
U=PE_Poitevinite x r_electron= 48.97 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Poitevinite is Not Radioactive

Poitevinite Classification

Dana Class:

29.6.2.4 (29)Hydrated Acid and Sulfates

(29.6)where A XO4 · x(H2O)

(29.6.2)Kieserite Group (Mono-hydrates)

29.6.2.1 Kieserite MgSO4·(H2O) C 2/c 2/m

29.6.2.2 Szomolnokite FeSO4·(H2O) A2/a 2/m

29.6.2.3 Szmikite MnSO4·(H2O) A2/a 2/m

29.6.2.4 Poitevinite (Cu,Fe,Zn)SO4·(H2O) P1 1

29.6.2.5 Gunningite (Zn,Mn)SO4·(H2O) A2/a 2/m

29.6.2.6 Dwornikite (Ni,Fe)SO4·(H2O) C 2/c 2/m

29.6.2.7 Cobaltkieserite! CoSO4·H2O C 2/c 2/m

Strunz Class:

VI/C.01-50 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium size

VI/C.01 - Kieserite group

VI/C.01-10 Kieserite MgSO4·(H2O) C 2/c 2/m

VI/C.01-20 Szomolnokite FeSO4·(H2O) A2/a 2/m

VI/C.01-30 Szmikite MnSO4·(H2O) A2/a 2/m

VI/C.01-35 Cobaltkieserite! CoSO4·H2O C 2/c 2/m

VI/C.01-40 Dwornikite (Ni,Fe)SO4·(H2O) C 2/c 2/m

VI/C.01-50 Poitevinite (Cu,Fe,Zn)SO4·(H2O) P1 1

VI/C.01-60 Gunningite (Zn,Mn)SO4·(H2O) A2/a 2/m

VI/C.01-70 Sanderite MgSO4·2(H2O) Mono ? Mono

Other Poitevinite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Poitevinite :
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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Poitevinite

(Cu,Fe++,Zn)SO4·(H2O)
Dana No: 29.6.2.4 Strunz No: VI/C.01-50
Locality:

Notes: