Wulfingite Mineral Data

Wulfingite Mineral Data +

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General Wulfingite Information

Chemical Formula:

Zn(OH)2

Composition:

Molecular Weight = 99.40 gm

Zinc 65.78 % Zn 81.88 % ZnO

Hydrogen 2.03 % H 18.12 % H₂O

Oxygen 32.19 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn(OH)₂

Environment:

Fluorite veins in a limestone quarry. Polymorth of sweetite and ashoverite.

IMA Status:

Approved IMA 1985

Locality:

Milltown, near Ashover, Derbyshite, England. Link to MinDat.org Location Data.

Name Origin:

Named for Ernst Anton Wulfing (1860-1930), professor of mineralogy and petrography, Heidelberg University.

Synonym:

Wuelfingite

Wulfingite Image

Images:

Wulfingite

Comments: Colorless equant crystal of w?lfingite.
Location: Richelsdorf Smelter, S?ss, Richelsdorf District, Hesse, Germany. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Wulfingite Crystallography

Axial Ratios:

a:b:c =1.6447:1:0.9525

Cell Dimensions:

a = 8.49, b = 5.162, c = 4.917, Z = 4; V = 215.49 Den(Calc)= 3.06

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁2₁2₁

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

By Intensity(I/I_o): 3.28(1), 4.407(1), 4.25(0.8),

Physical Properties of Wulfingite

Color:

Colorless, White.

Density:

3.05

Diaphaniety:

Transparent to Translucent

Habit:

Pseudo Octohedral - Crystals show an octohedral outline.

Hardness:

3 - Calcite

Luster:

Waxy

Streak:

white

Optical Properties of Wulfingite

Gladstone-Dale:

CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1885,KPDmeas= 0.1891,KC= 0.191

Optical Data:

Biaxial (+), a=1.5722, b=1.5781, g=1.5801, bire=0.0079, 2V(Calc)=60, 2V(Meas)=60.

Calculated Properties of Wulfingite

Electron Density:

r_electron=2.95 gm/cc
note: r_Wulfingite=3.05 gm/cc.

Fermion Index

Fermion Index = 0.02712
Boson Index = 0.97288

Photoelectric:

PE_Wulfingite= 32.62 barns/electron
U=PE_Wulfingite x r_electron= 96.07 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Wulfingite is Not Radioactive

Wulfingite Classification

Dana Class:

6.2.10.1 (6)Hydroxides and Oxides Containing Hydroxyl

(6.2)where X++ (OH)2

(6.2.10)Dana Group

6.2.10.1 Wulfingite Zn(OH)2 P 2₁2₁2₁ 2 2 2

Strunz Class:

IV/F.03-80 IV - Oxides

IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure

IV/F.03 - Brucite series

IV/F.03-10 Brucite Mg(OH)2 P 3m1 3 2/m

IV/F.03-20 Amakinite (Fe,Mg)(OH)2 P 3m1 3 2/m

IV/F.03-30 Pyrochroite Mn(OH)2 P 3m1 3 2/m

IV/F.03-40 Theophrastite Ni(OH)2 P 3m1 3 2/m

IV/F.03-50 Paraotwayite Ni(OH)2-x(SO4,CO3)0.5xx=.5 Pm m

IV/F.03-60 Sweetite Zn(OH)2 P 4₁2₁2,P 4₃2₁2 4 2 2

IV/F.03-70 Ashoverite Zn(OH)2 I 4₁/amd 4/m 2/m 2/m

IV/F.03-80 Wulfingite Zn(OH)2 P 2₁2₁2₁ 2 2 2

IV/F.03-90 Spertiniite Cu(OH)2 C mc2₁ mm2

IV/F.03-100 Portlandite Ca(OH)2 P 3m1 3 2/m

Other Wulfingite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.73,p196,1988) OPTIC PROP.(Am.Min.,Vol.73,p196,1988)

See Also:

Links to other databases for Wulfingite :
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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Print or Cut-and-Paste your Wulfingite Specimen Label here :

Wulfingite

Zn(OH)2
Dana No: 6.2.10.1 Strunz No: IV/F.03-80
Locality:

Notes: