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Hydrowoodwardite Mineral Data

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General Hydrowoodwardite Information

Help on Chemical  Formula: Chemical Formula: Cu1-xAlx(OH)2(SO4)x/2•n(H2O) with 0 < x < 0.67 and n > 3x/2
Help on Composition: Composition: Molecular Weight = 116.81 gm
   Aluminum  11.55 %  Al   21.82 % Al2O3
   Copper    27.20 %  Cu   30.63 % Cu2O
   Hydrogen   3.02 %  H    26.99 % H2O
   Sulfur     6.86 %  S    17.14 % SO3
   Oxygen    51.37 %  O
            ______        ______ 
            100.00 %       96.58 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu0.5Al0.5(OH)2(SO4)0.25•0.75(H2O)
Help on Environment: Environment: Member of the Hydrotalcite group. The copper dominant analog of carrboydite and glaucocerinite.
Help on IMA Status: IMA Status: Approved IMA 1996 (Dana # Added)
Help on Locality: Locality: St. Briccius Cu, Ag, Sn mine, K�nigswalde, near Annaberg, Saxony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the higher hydrated analogue of woodwardite.
Help on Synonym: Synonym: IMA1996-038
 

Hydrowoodwardite Image

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  Hydrowoodwardite

Comments: Massive blue to greenish-blue hydrowoodwardite.
Location: St Christoph Mine, Bärenhecke, Glashütte, Erzgebirge, Saxony, Germany. Scale: Specimen size 3.4 cm.
© Thomas Witzke / Abraxas-Verlag

Hydrowoodwardite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:10.39087
Help on Cell Dimensions: Cell Dimensions: a = 3.07, c = 31.9, Z = 3; V = 260.37 Den(Calc)= 2.23
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.5(1), 5.26(0.17), 3.5(0.06),
 

Physical Properties of Hydrowoodwardite

Help on Color: Color: Blue, Pale blue.
Help on Density: Density: 2.33
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: pale blue
 

Optical Properties of Hydrowoodwardite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2498,KPDmeas= 0.2391,KC= 0.2389
Ncalc = 1.53 - 1.56
Help on Optical Data: Optical Data: Uniaxial (+), w=1.549, e=1.565, bire=0.0160.
 

Calculated Properties of Hydrowoodwardite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.33 gm/cc
note: Specific Gravity of Hydrowoodwardite =2.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0007658167
Boson Index = 0.9992341833
Help on Photoelectric: Photoelectric: PEHydrowoodwardite = 12.28 barns/electron
U=PEHydrowoodwardite x rElectron Density= 28.66 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydrowoodwardite is Not Radioactive
 

Hydrowoodwardite Classification

Help on  Dana Class: Dana Class: 31.02.02.02 (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 Hydrowoodwardite Information

Help on References: References: NAME( CanMin, 8/99) PHYS. PROP.(MinRec, V 31, No 2) OPTIC PROP.(MinRec, V 31, No. 2)
Help on See Also: See Also: Links to other databases for Hydrowoodwardite :
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 Hydrowoodwardite Specimen Label here :

Hydrowoodwardite

Cu1-xAlx(OH)2(SO4)x/2•n(H2O) with 0 < x < 0.67 and n > 3x/2
Dana No: 31.02.02.02 Strunz No: 07.DD.35
Locality:

 

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