Wroewolfeite Mineral Data

Wroewolfeite Mineral Data +

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General Wroewolfeite Information

Chemical Formula:

Cu4(SO4)(OH)6·2(H2O)

Composition:

Molecular Weight = 488.32 gm

Copper 52.05 % Cu 65.16 % CuO

Hydrogen 2.06 % H 18.45 % H₂O

Sulfur 6.57 % S 16.40 % SO₃

Oxygen 39.32 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₄(SO₄)(OH)₆·2(H₂O)

Environment:

Oxidation zone of an old lead mine.

IMA Status:

Approved IMA 1975

Locality:

Loudville, Maryland, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Caleb Wroe Wolfe (1908-1980), crystallographer, Boston University.

Synonym:

ICSD 40091

PDF 27-1133

Wroewolfeite Image

Images:

Wroewolfeite

Comments: Blue, lath-shaped crystals of wroewolfeite on matrix.
Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Wroewolfeite Crystallography

Axial Ratios:

a:b:c =0.9101:1:2.1574

Cell Dimensions:

a = 6.058, b = 6.656, c = 14.36, Z = 2; beta = 93.467° V = 577.96 Den(Calc)= 2.81

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Pc

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

By Intensity(I/I_o): 7.15(1), 3.581(0.7), 2.628(0.35),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
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Help on Above

Hawthorne F C , Groat L A , American Mineralogist , 70 (1985) p.1050-1055, The crystal structure of wroewolfeite, a mineral with, [Cu4(OH)6(SO4)(H2O)] sheets

Physical Properties of Wroewolfeite

Cleavage:

[010] Perfect, [100] Perfect, [001] Perfect

Color:

Greenish blue, Dark greenish blue.

Density:

3.27

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Streak:

light blue

Optical Properties of Wroewolfeite

Gladstone-Dale:

CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.179 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2388,KPDmeas= 0.2052,KC= 0.2025

Optical Data:

Biaxial (-), a=1.637, b=1.682, g=1.694, bire=0.0570, 2V(Calc)=52, 2V(Meas)=53.

Pleochroism (x):

light blue.

Pleochroism (y):

deep greenish blue.

Pleochroism (z):

greenish blue.

Calculated Properties of Wroewolfeite

Electron Density:

r_electron=3.19 gm/cc
note: r_Wroewolfeite=3.27 gm/cc.

Fermion Index

Fermion Index = 0.00068
Boson Index = 0.99932

Photoelectric:

PE_Wroewolfeite= 22.95 barns/electron
U=PE_Wroewolfeite x r_electron= 73.16 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Wroewolfeite is Not Radioactive

Wroewolfeite Classification

Dana Class:

31.4.2.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.4)where (A+ B++)4 (XO4) Zq·x(H2O)

(31.4.2)Dana Group

31.4.2.1 Wroewolfeite Cu4(SO4)(OH)6·2(H2O) Pc m

Strunz Class:

VI/D.03-30 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.03 - Langite series, Posnjakite - Nakuriite

VI/D.03-10 Posnjakite Cu4(SO4)(OH)6·(H2O) C 2/c 2/m

VI/D.03-20 Langite Cu4(SO4)(OH)6·2(H2O) Pc m

VI/D.03-30 Wroewolfeite Cu4(SO4)(OH)6·2(H2O) Pc m

VI/D.03-40 Namuwite (Zn,Cu)4(SO4)(OH)6·4(H2O) Unk Hex

VI/D.03-50 Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10·5(H2O) P 6₃/m,P 6₃, or P 6₃22 Hex

VI/D.03-55 Theresemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O) P 6₃ 6

VI/D.03-60 Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O) P 3 or P 3- Trig

VI/D.03-65 Christelite! Zn3Cu2(SO4)2(OH)6·4(H2O) P1 1

VI/D.03-70 Ktenasite (Cu,Zn)5(SO4)2(OH)6·6(H2O) P 2₁/c 2/m

VI/D.03-75 Ramsbeckite (Cu,Zn)15(SO4)4(OH)22·6(H2O) P 2₁/a 2/m

VI/D.03-80 Campigliaite Cu4Mn(SO4)2(OH)6·4(H2O) C 2 2

VI/D.03-90 Nakauriite (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48(H2O) Unk Ortho

Other Wroewolfeite Information

References:

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

See Also:

Links to other databases for Wroewolfeite :
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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Wroewolfeite

Cu4(SO4)(OH)6·2(H2O)
Dana No: 31.4.2.1 Strunz No: VI/D.03-30
Locality:

Notes: