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 % H2 O
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
X Ray Diffraction:
By Intensity(I/Io ): 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:
PEAshoverite = 32.62 barns/electronU=PEAshoverite x r Electron 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 41 21 2,P 43 21 2 4 2 2
04.FA.10 Wulfingite Zn(OH)2 P 21 21 21 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:
Notes:
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