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Luetheite Mineral Data

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General Luetheite Information

Help on Chemical  Formula: Chemical Formula: Cu2Al2(AsO4)2(OH)4•(H2O)
Help on Composition: Composition: Molecular Weight = 544.94 gm
   Aluminum   9.90 %  Al   18.71 % Al2O3
   Copper    23.32 %  Cu   29.19 % CuO
   Arsenic   27.50 %  As   42.18 % As2O5
   Hydrogen   1.11 %  H     9.92 % H2O
   Oxygen    38.17 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu2Al2(AsO4)2(OH)4•(H2O)
Help on Environment: Environment: Rare mineral filling cavities in intensely altered volcanic rock.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Prospect about 2.7 km southeast of the Flux mine, Patagonia district, Santa Cruz Co., Arizona Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ronald D. Luethe (1944- ), geologist for Phelps Dodge Corporation, Douglas, Arizona, USA, who found the first material.
Help on Name Pronunciation: Name Pronunciation: Luetheite + Pronunciation Say LUETHEITE

Luetheite Image

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Comments: Blue to greenish crystalline luetheite crust on altering rock matrix.
Location: Patagonia, Santa Cruz County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Luetheite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.8947:1:1.0991
Help on Cell Dimensions: Cell Dimensions: a = 14.743, b = 5.093, c = 5.598, Z = 2; beta = 101.817° V = 411.42 Den(Calc)= 4.40
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.498(1), 7.208(0.7), 2.507(0.5),

Physical Properties of Luetheite

Help on Cleavage: Cleavage: {100} Distinct
Help on Color: Color: Blue, Greenish, Light green.
Help on Density: Density: 4.28
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 3 - Calcite

Optical Properties of Luetheite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.05 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.076 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.176,KPDmeas= 0.1809,KC= 0.1904
Ncalc = 1.81 - 1.84
Help on Optical Data: Optical Data: Biaxial (-), a=1.752, b=1.775, g=1.796, bire=0.0440, 2V(Calc)=86, 2V(Meas)=88.

Calculated Properties of Luetheite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.08 gm/cc
note: Specific Gravity of Luetheite =4.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001848713
Boson Index = 0.9998151287
Help on Photoelectric: Photoelectric: PELuetheite = 29.28 barns/electron
U=PELuetheite x rElectron Density= 119.57 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Luetheite is Not Radioactive

Luetheite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.10)Chenevixite Group Chenevixite Cu2Fe2(AsO4)2(OH)4•(H2O) P 21/m 2/m Luetheite Cu2Al2(AsO4)2(OH)4•(H2O) P 21/m 2/m
Help on  Strunz Class: Strunz Class: 08.DD.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DD -With only medium-sized cations, (OH, etc.):RO4 = 2:1
08.DD.05 Chenevixite Cu2Fe2(AsO4)2(OH)4•(H2O) P 21/m 2/m
08.DD.05 Luetheite Cu2Al2(AsO4)2(OH)4•(H2O) P 21/m 2/m

Other Luetheite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Luetheite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 08.DD.05





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