Zincowoodwardite-1T Mineral Data

Zincowoodwardite-1T Mineral Data

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General Zincowoodwardite-1T Information

Chemical Formula:

[Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)], x = 0.33, n . 0.96

Composition:

Molecular Weight = 121.50 gm

Aluminum 7.33 % Al 13.85 % Al₂O₃

Zinc 35.52 % Zn 44.21 % ZnO

Boron 2.67 % B 8.59 % B₂O₃

Hydrogen 3.25 % H 29.06 % H₂O

Sulfur 4.09 % S 10.21 % SO₃

Oxygen 47.14 % O

______ ______

100.00 % 105.93 % = TOTAL OXIDE

Empirical Formula:

Zn_0.66B_0.3Al_0.33(OH)₂(SO₄)_0.155·0.96(H₂O)

Environment:

A member of the hydrotalcite group; polytype 1T

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

Laurion (Lavrion,Laurium), Greece. Link to MinDat.org Location Data.

Name Origin:

Named as the Zn analog of woodwardite.

Synonym:

IMA1998-026a

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Zincowoodwardite-1T Crystallography

Axial Ratios:

a:c = 1:2.88838

Cell Dimensions:

a = 3.064, c = 8.85, Z = 1; V = 71.95 Den(Calc)= 2.80

Crystal System:

Trigonal - RhombohedralH-M Symbol ( 3) Space Group: P 3

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

By Intensity(I/I_o): 8.9(1)(001), 4.47(0.9)(002), 2.55(0.6)(101),2.28(0.5)(102), 1.51(0.3)(111), 1.53(0.3)(110), 1.98(0.3)(103), 2.65(0.3)(100),

Physical Properties of Zincowoodwardite-1T

Cleavage:

None

Color:

Pale blue, Bluish white.

Density:

2.71

Diaphaniety:

Translucent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Pseudo Hexagonal - Crystals show a hexagonal outline.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

1 - Talc

Luster:

Waxy

Streak:

pale bluish white

Optical Properties of Zincowoodwardite-1T

Gladstone-Dale:

CI meas= 0.12 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.148 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1993,KPDmeas= 0.2059,KC= 0.2339

Optical Data:

Uniaxial (?), b=1.558.

Calculated Properties of Zincowoodwardite-1T

Electron Density:

r_electron=2.70 gm/cc
note: r_{Zincowoodwardite-1T}=2.71 gm/cc.

Fermion Index

Fermion Index = 0.02041
Boson Index = 0.97959

Photoelectric:

PE_{Zincowoodwardite-1T}= 17.58 barns/electron
U=PE_{Zincowoodwardite-1T} x r_electron= 47.55 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zincowoodwardite-1T is Not Radioactive

Zincowoodwardite-1T Classification

Dana Class:

31.2.2.3a (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.2)where (A+ B++)6 (XO4) Zq·x(H2O)

(31.2.2)Dana Group

31.2.2.1 Woodwardite Cu4Al2(SO4)(OH)12·2-4(H2O) Unk Hex

31.2.2.2 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2·n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m

31.2.2.3 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3

31.2.2.3a Zincowoodwardite-1T ! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],x=0.33,n.0.96 P 3 3

31.2.2.3b Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m

Strunz Class:

VI/D.08-45* VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.08 - Spangolite - Glaucocerinite series

VI/D.08-05 Bechererite! (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2 P 3 3

VI/D.08-10 Spangolite Cu6Al(SO4)(OH)12Cl·3(H2O) P 3₁c 3m

VI/D.08-20 Cyanotrichite Cu4Al2(SO4)(OH)12·2(H2O) Unk Ortho

VI/D.08-30 Carbonate-cyanotrichite Cu4Al2(CO3,SO4)(OH)12·2(H2O) Unk Ortho

VI/D.08-35 Camerolaite Cu4Al2[HSbO4,SO4](OH)10(CO3)·2(H2O) P 2₁ ? 2

VI/D.08-40 Woodwardite Cu4Al2(SO4)(OH)12·2-4(H2O) Unk Hex

VI/D.08-42 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2·n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m

VI/D.08-45 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3

VI/D.08-45* Zincowoodwardite-1T [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],x=0.33,n.0.96 P 3 3

VI/D.08-45** Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m

VI/D.08-50 Chalcoalumite CuAl4(SO4)(OH)12·3(H2O) P 2₁ 2

VI/D.08-60 Nickelalumite (Ni,Cu)Al4[(SO4),(NO3)2](OH)12·3(H2O) P 2₁ 2

VI/D.08-70 Mbobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·3(H2O) P 2₁ 2

VI/D.08-80 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·14(H2O) Unk Mono

VI/D.08-90 Carrboydite (Ni,Cu)14Al9(SO4,CO3)6(OH)43·7(H2O) Unk Hex

VI/D.08-100 Zincaluminite Zn6Al6(SO4)2(OH)26·5(H2O) Unk Hex

VI/D.08-110 Glaucocerinite (Zn,Cu)5Al3(SO4)1.5(OH)16·9(H2O) Unk (HEX-R) Trig

Other Zincowoodwardite-1T Information

References:

NAME( AmMin, vol 86, p 769) PHYS. PROP.(AmMin, Vol 86, p 769) OPTIC PROP.(AmMin, Vol 86, p 769)

See Also:

Links to other databases for Zincowoodwardite-1T :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Zincowoodwardite-1T Specimen Label here :

Zincowoodwardite-1T

[Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)], x = 0.33, n . 0.96
Dana No: 31.2.2.3a Strunz No: VI/D.08-45*
Locality:

Notes: