Grandviewite Mineral Data

General Grandviewite Information

Chemical Formula:

Cu3Al9(SO4)2(OH)29

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

Empirical Formula:

Cu₃Al₉(SO₄)₂(OH)₂₉

Environment:

Secondary mineral in a copper mine.

IMA Status:

Proposed IMA 2007 (Dana # Added)

Locality:

Grandview mine, Grand Canyon National Park, Coconino County, Arizona, USA Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA2007-004

Grandviewite Image

Images:

Grandviewite

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

Axial Ratios:

a:b:c =1.7062:1:1.5826

Cell Dimensions:

a = 10.908, b = 6.393, c = 10.118, Z = 1; beta = 107.47° V = 673.03 Den(Calc)= 2.76

Crystal System:

MonoclinicSpace Group: P 2, Pm or P 2/m

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

By Intensity(I/I_o): 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

Color:

Turquoise blue.

Diaphaneity:

Transparent

Habit:

Acicular - Occurs as needle-like crystals.

Luster:

Vitreous (Glassy)

Streak:

light blue

Optical Properties of Grandviewite

Optical Data:

NCalc= 1.65 - from Gladstone-Dale relationship (KC = 0.2345) where Ncalc=Dcalc*KC+1

Calculated Properties of Grandviewite

Electron Density:

Bulk Density (Electron Density)=2.77 gm/cc
note: Specific Gravity of Grandviewite =2.76 gm/cc.

Fermion Index:

Fermion Index = 0.0006878045
Boson Index = 0.9993121955

Photoelectric:

PE_Grandviewite= 8.21 barns/electron
U=PE_Grandviewite x rElectron Density= 22.72 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Grandviewite is Not Radioactive

Grandviewite Classification

Dana Class:

06.04.14.02 (06)Hydroxides and Oxides Containing Hydroxyl

(06.04)containing multiple cations

(06.04.14)Dana Group

06.04.14.01 Krivovichevite! Pb3[Al(OH)6](SO4)(OH) R 3c 3m

06.04.14.02 Grandviewite! Cu3Al9(SO4)2(OH)29 P 2, Pm or P 2/m Mono

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

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

Search for Grandviewite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Grandviewite :

A Bijoux Google Search for Grandviewite
Adam's Minerals Google Search for Grandviewite
Cape Minerals Google Search for Grandviewite
Dakota Matrix Minerals Google Search for Grandviewite
Excalibur Mineral Corp. Google Search for Grandviewite
Exceptional Minerals Google Search for Grandviewite
John Betts Fine Minerals Search for Grandviewite
McDougall Minerals Google Search for Grandviewite
Mineral News Website Link
Rock and Mineral Shows Google Search for Grandviewite
Weinrich Minerals, Inc. Google Search for Grandviewite

Ask about Grandviewite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Grandviewite

Cu3Al9(SO4)2(OH)29
Dana No: 06.04.14.02 Strunz No: 07.XX.00
Locality:

Notes: