Wulfingite Mineral Data

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.

Name Pronunciation:

Wulfingite + Pronunciation

Synonym:

Wuelfingite

Wulfingite Image

Images:

Wulfingite

Comments: Colorless equant crystal of wülfingite.
Location: Richelsdorf Smelter, Süss, 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 - Disphenoidal H-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

Diaphaneity:

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
Ncalc = 1.58

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:

Bulk Density (Electron Density)=2.95 gm/cc
note: Specific Gravity of Wulfingite =3.05 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Wulfingite= 32.62 barns/electron
U=PE_Wulfingite x rElectron Density= 96.07 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wulfingite is Not Radioactive

Wulfingite Classification

Dana Class:

06.02.10.01 (06)Hydroxides and Oxides Containing Hydroxyl

(06.02)where X++ (OH)2

(06.02.10)Dana Group

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

Strunz Class:

04.FA.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.F - Hydroxides (without V or U)

04.FA -Hydroxides with OH, without H2O; corner-sharing tetrahedra

04.FA.10 Ashoverite Zn(OH)2 I 4₁/amd 4/m 2/m 2/m

04.FA.10 Sweetite Zn(OH)2 P 4₁2₁2,P 4₃2₁2 4 2 2

04.FA.10 Wulfingite Zn(OH)2 P 2₁2₁2₁ 2 2 2

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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Wulfingite Specimen Label here :

Wulfingite

Zn(OH)2
Dana No: 06.02.10.01 Strunz No: 04.FA.10
Locality:

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