Zincowoodwardite Mineral Data

Zincowoodwardite Mineral Data
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General Zincowoodwardite Information

Help on Chemical Formula: Chemical Formula: [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n]
Help on Composition: Composition: Molecular Weight = 103.10 gm
   Aluminum   9.94 %  Al   18.79 % Al2O3
   Zinc      29.81 %  Zn   37.10 % ZnO
   Hydrogen   3.13 %  H    27.96 % H2O
   Sulfur     5.60 %  S    13.98 % SO3
   Oxygen    51.52 %  O
            ______        ______ 
            100.00 %       97.83 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn0.47Al0.38(OH)2(SO4)0.18(H2O)0.6
Help on Environment: Environment: Composed of intergrown 1T and 3R polytypes.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: Locality: Laurion (Lavrion,Laurium), Greece. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Zn analog of woodwardite.
Help on Synonym: Synonym: IMA1998-026
 

Zincowoodwardite Image

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Zincowoodwardite   Zaccagnaite

Comments: White to pale bluish zaccagnaite intimately intergrown with zincowoodwardite.
Location: Hilarion Mine, Agios Konstantinos, Lavrion District, Attikí Prefecture, Greece. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag
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Zincowoodwardite

Comments: Botryoidal zincowoodwardite. The bluish-green color is due to a copper content.
Location: Christiana Mine, Agios Konstantinos, Lavrion District, Attikí Prefecture, Greece. Scale: Picture size 10 mm.
© Thomas Witzke / Abraxas-Verlag

Zincowoodwardite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.91463
Help on Cell Dimensions: Cell Dimensions: a = 3.0364, c = 8.85, Z = 1; V = 70.66 Den(Calc)= 2.42
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: P 3- or R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 11.12(1), 5.549(0.24), 3.704(0.15),
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Witzke T , Raade G , Neues Jahrbuch fur Mineralogie, Monatshefte , 2000 (2000) p.455-465, Zincowoodwardite, [Zn1-x Alx(OH)2][(SO4)x/2(H2O)n], a new mineral of the hydrotalcite group, Locality: Hilarion mine, Kamariza, near Laurion, Greece, Note: polytype Zincowoodwardite-1T

 

Physical Properties of Zincowoodwardite

Help on Cleavage: Cleavage: None
Help on Color: Color: Pale blue, Bluish white.
Help on Density: Density: 2.66 - 2.71, Average = 2.68
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 1 - Talc
Help on Luster: Luster: Waxy
Help on Streak: Streak: pale bluish white
 

Optical Properties of Zincowoodwardite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.066 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2252,KPDmeas= 0.203,KC= 0.2173
Ncalc = 1.53 - 1.59
Help on Optical Data: Optical Data: Uniaxial (?), b=1.532-1.558.
 

Calculated Properties of Zincowoodwardite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.43 gm/cc
note: Specific Gravity of Zincowoodwardite =2.42 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEZincowoodwardite = 14.95 barns/electron
U=PEZincowoodwardite x rElectron Density= 36.27 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zincowoodwardite is Not Radioactive
 

Zincowoodwardite Classification
Help on Dana Class: Dana Class: 31.02.02.03 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.02)where (A+ B++)6 (XO4) Zq·x(H2O)
  (31.02.02)Woodwardite Group
 
31.02.02.01 Woodwardite Cu4Al2(SO4)(OH)12•2-4(H2O) Unk Hex
 
31.02.02.02 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2•n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m
 
31.02.02.03 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3
 
31.02.02.03a Zincowoodwardite-1T! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],x=0.33,n.0.96 P 3 3
 
31.02.02.03b Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m
Help on Strunz Class: Strunz Class: 07.DD.35 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DD -With only medium-sized cations; sheets of edge-sharing octahedra
 
07.DD.35 Carrboydite (Ni,Cu)14Al9(SO4,CO3)6(OH)43•7(H2O) Unk Hex
 
07.DD.35 Glaucocerinite (Zn,Cu)5Al3(SO4)1.5(OH)16•9(H2O) Unk (HEX-R) Trig
 
07.DD.35 Honessite Ni6Fe2(SO4)(OH)16•4(H2O) R 3m 3 2/m
 
07.DD.35 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2•n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m
 
07.DD.35 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3
 
07.DD.35 Hydrohonessite Ni6Fe2(SO4)(OH)16•7(H2O) Unk Hex
 
07.DD.35 Motukoreaite Na2Mg38Al24(CO3)13(SO4)8(OH)108•56(H2O) R 3m 3 2/m
 
07.DD.35 Mountkeithite (Mg,Ni)11(Fe,Cr)3(SO4,CO3)3.5(OH)24•11(H2O) Unk Hex
 
07.DD.35 Shigaite Mn7Al4(SO4)2(OH)22•8(H2O) R 3 3
 
07.DD.35 Natroglaucocerinite! (Na,Zn,Cu)10Al6(SO4)3(OH)32•18(H2O)? Unk
 
07.DD.35 Wermlandite (Ca,Mg)Mg7(Al,Fe)2(SO4)2(OH)18•12(H2O) P 3c1 3 2/m
 
07.DD.35 Nikischerite! NaFe6Al3(SO4)2(OH)18(H2O)12 R 3 3
 
07.DD.35 Zincaluminite Zn6Al6(SO4)2(OH)26•5(H2O) Unk Hex
 
07.DD.35 Woodwardite Cu4Al2(SO4)(OH)12•2-4(H2O) Unk Hex
 
07.DD.35 Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m
 
07.DD.35 Zincowoodwardite-1T! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],x=0.33,n.0.96 P 3 3
 

Other Zincowoodwardite Information
Help on References: References: NAME( AmMin, vol 86, p 769) PHYS. PROP.(AmMin, Vol 86, p 769) OPTIC PROP.(AmMin, Vol 86, p 769)
Help on See Also: See Also: Links to other databases for Zincowoodwardite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Zincowoodwardite

[Zn1-xAlx(OH)2][(SO4)x/2(H2O)n]
Dana No: 31.02.02.03 Strunz No: 07.DD.35
Locality:

 

Notes: