Mineralogy Database

Grandviewite Mineral Data

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General Grandviewite Information

Help on Chemical  Formula: Chemical Formula: Cu3Al9(SO4)2(OH)29
Help on Composition: Composition: Molecular Weight = 1,118.81 gm
   Aluminum  21.70 %  Al   41.01 % Al2O3
   Copper    17.04 %  Cu   19.18 % Cu2O
   Hydrogen   2.61 %  H    23.35 % H2O
   Sulfur     5.73 %  S    14.31 % SO3
   Oxygen    52.91 %  O
            ______        ______ 
            100.00 %       97.85 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3Al9(SO4)2(OH)29
Help on Environment: Environment: Secondary mineral in a copper mine.
Help on IMA Status: IMA Status: Proposed IMA 2007 (Dana # Added)
Help on Locality: Locality: Grandview mine, Grand Canyon National Park, Coconino County, Arizona, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA2007-004

Grandviewite Image

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Comments: Light blue sprays of fibrous grandviewite crystals associated with blue cyanotrichite.
Location: Grand View mine, Coconino County, Arizona, USA. Scale: See Image.
© George Stevens, Malcom Alter/RRUFF

Grandviewite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.7062:1:1.5826
Help on Cell Dimensions: Cell Dimensions: a = 10.908, b = 6.393, c = 10.118, Z = 1; beta = 107.47° V = 673.03 Den(Calc)= 2.76
Help on Crystal System: Crystal System: Monoclinic Space Group: P 2, Pm or P 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.208(1), 2.413(0.9), 2.99(0.9),3.949(0.79), 5.287(0.35), 9.667(0.33), 2.816(0.14), 3.625(0.1),

Physical Properties of Grandviewite

Help on Color: Color: Turquoise blue.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light blue

Optical Properties of Grandviewite

Help on Optical Data: Optical Data: NCalc= 1.65 - from Gladstone-Dale relationship (KC = 0.2345) where Ncalc=Dcalc*KC+1

Calculated Properties of Grandviewite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.77 gm/cc
note: Specific Gravity of Grandviewite =2.76 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0006878045
Boson Index = 0.9993121955
Help on Photoelectric: Photoelectric: PEGrandviewite = 8.21 barns/electron
U=PEGrandviewite x rElectron Density= 22.72 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Grandviewite is Not Radioactive

Grandviewite Classification

Help on  Dana Class: Dana Class: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.04)containing multiple cations
  (06.04.14)Dana Group Krivovichevite! Pb3[Al(OH)6](SO4)(OH) R 3c 3m Grandviewite! Cu3Al9(SO4)2(OH)29 P 2, Pm or P 2/m Mono
Help on  Strunz Class: Strunz Class: 07.XX.00 07 - SULFATES (SELENATES, TELLURATES)
  07.X - Unclassified Strunz SULFATES (SELENATES, TELLURATES)
  07.XX -Unknown
07.XX.00 Blakeite Fe2(TeO3)3 Cubic ? Cubic
07.XX.00 Aiolosite! Na4Bi(SO4)3Cl P 63/m 6/m
07.XX.00 Steverustite Pb5(OH)5[Cu(SO3S--)3](H2O)1.67 P 21/n 2/m
07.XX.00 Adranosite (NH4)4NaAl2(SO4)4Cl(OH)2 I 41/acd 4mm
07.XX.00 Grandviewite! Cu3Al9(SO4)2(OH)29 P 2, Pm or P 2/m Mono
07.XX.00 IMA2009-008 Y2[(UO2)8O6(SO4)4(OH)2]•26H2O P1 1

Other Grandviewite Information

Help on See Also: See Also: Links to other databases for Grandviewite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 07.XX.00





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