Sweetite Mineral Data

Sweetite Mineral Data +

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General Sweetite 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

IMA Status:

Approved IMA 1984

Locality:

Link to MinDat.org Location Data.

Sweetite Image

Images:

Sweetite

Comments: A white, pseudocubic crystal of sweetite.
Location: Milltown Quarry, Ashover, Derbyshire, England, UK. Scale: Picture size 1.4 mm.
© John Betts - Fine Minerals

Sweetite Crystallography

Axial Ratios:

a:c = 1:1.7441

Cell Dimensions:

a = 8.222, c = 14.34, Z = 20; V = 969.40 Den(Calc)= 3.41

Crystal System:

Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 4₁2₁2,P 4₃2₁2

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

By Intensity(I/I_o): 2.922(1), 3.572(0.6), 4.53(0.37),

Physical Properties of Sweetite

Color:

Colorless, White.

Density:

3.33

Diaphaniety:

Transparent to Translucent

Streak:

white

Optical Properties of Sweetite

Gladstone-Dale:

CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1852,KPDmeas= 0.1896,KC= 0.191

Optical Data:

Uniaxial (-), e=1.628, w=1.635, bire=0.0070.

Calculated Properties of Sweetite

Electron Density:

r_electron=3.22 gm/cc
note: r_Sweetite=3.33 gm/cc.

Fermion Index

Fermion Index = 0.02712
Boson Index = 0.97288

Photoelectric:

PE_Sweetite= 32.62 barns/electron
U=PE_Sweetite x r_electron= 104.89 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sweetite is Not Radioactive

Sweetite Classification

Dana Class:

6.2.9.1 (6)Hydroxides and Oxides Containing Hydroxyl

(6.2)where X++ (OH)2

(6.2.9)Dana Group

6.2.9.1 Sweetite Zn(OH)2 P 4₁2₁2,P 4₃2₁2 4 2 2

Strunz Class:

IV/F.03-60 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 Sweetite Information

References:

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

See Also:

Links to other databases for Sweetite :
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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Translate Sweetite Mineral Data :

Ask about Sweetite here :
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Print or Cut-and-Paste your Sweetite Specimen Label here :

Sweetite

Zn(OH)2
Dana No: 6.2.9.1 Strunz No: IV/F.03-60
Locality:

Notes: