Ashoverite Mineral Data

General Ashoverite 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:

In a vein in a limestone quarry, on fluorite associated with the polymorphs, sweetite and wulfingite.

IMA Status:

Approved IMA 1988

Locality:

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

Name Origin:

Named for the locality.

Name Pronunciation:

Ashoverite + Pronunciation

Ashoverite Crystallography

Axial Ratios:

a:c = 1:4.88791

Cell Dimensions:

a = 6.825, c = 33.36, Z = 32; V = 1,553.93 Den(Calc)= 3.40

Crystal System:

Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4₁/amd

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

By Intensity(I/I_o): 2.902(1), 1.819(0.33), 1.702(0.21),

Physical Properties of Ashoverite

Cleavage:

{001} Perfect

Color:

Colorless, White.

Density:

3.3

Diaphaneity:

Translucent

Habit:

Platy - Sheet forms (e.g. micas).

Luminescence:

Fluorescent, Short UV=bluish white.

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Ashoverite

Gladstone-Dale:

CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1865,KPDmeas= 0.1921,KC= 0.191
Ncalc = 1.63 - 1.65

Optical Data:

Uniaxial (+), w=1.629, e=1.639, bire=0.0100.

Calculated Properties of Ashoverite

Electron Density:

Bulk Density (Electron Density)=3.19 gm/cc
note: Specific Gravity of Ashoverite =3.30 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Ashoverite= 32.62 barns/electron
U=PE_Ashoverite x rElectron Density= 103.95 barns/cc.

Radioactivity:

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

Ashoverite Classification

Dana Class:

06.02.11.01 (06)Hydroxides and Oxides Containing Hydroxyl

(06.02)where X++ (OH)2

(06.02.11)Dana Group

06.02.11.01 Ashoverite Zn(OH)2 I 4₁/amd 4/m 2/m 2/m

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 Ashoverite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p431,1990) OPTIC PROP.(Am.Min.,Vol.75,p431,1990)

See Also:

Links to other databases for Ashoverite :
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 Ashoverite Specimen Label here :

Ashoverite

Zn(OH)2
Dana No: 06.02.11.01 Strunz No: 04.FA.10
Locality:

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