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Aluminocopiapite Mineral Data

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General Aluminocopiapite Information

Help on Chemical  Formula: Chemical Formula: Al2/3Fe+++4(SO4)6O(OH)2•20(H2O)
Help on Composition: Composition: Molecular Weight = 1,212.08 gm
   Aluminum   1.48 %  Al    2.80 % Al2O3
   Iron      18.43 %  Fe   26.35 % Fe2O3
   Hydrogen   3.49 %  H    31.21 % H2O
   Sulfur    15.87 %  S    39.63 % SO3
   Oxygen    60.72 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al0.66Fe3+4(SO4)6(OH)2•20(H2O)
Help on Environment: Environment: Secondary mineral typically formed by the oxidation of pyrite in shales and coal; may be a fumarolic reaction product.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1947
Help on Locality: Locality: "Temple Rock", [probably the Temple Mountain district, Emery Co.,] Utah; at Island Mountain, Trinity Co., and the Champion mine, White Mountains, Mono Co., California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its content of aluminum and relation to the copiapite group.
Help on Name Pronunciation: Name Pronunciation: Aluminocopiapite Say ALUMINOCOPIAPITE
 

Aluminocopiapite Image

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  Aluminocopiapite

Comments: Small yellow crystals of aluminocopiapite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Aluminocopiapite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3992:1:0.4001
Help on Cell Dimensions: Cell Dimensions: a = 7.251, b = 18.161, c = 7.267, Z = 1; alpha = 93.983°, beta = 102.283°, gamma = 97.966° V = 923.79 Den(Calc)= 2.18
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.2(1), 5.58(0.8), 18.1(0.8),
 

Physical Properties of Aluminocopiapite

Help on Color: Color: Yellow.
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: light yellow
 

Optical Properties of Aluminocopiapite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.049 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2521,KC= 0.2651
Ncalc = 1.58
Help on Optical Data: Optical Data: Biaxial (+), a=1.529, b=1.535, g=1.585, bire=0.0560, 2V(Calc)=40, 2V(Meas)=45.
 

Calculated Properties of Aluminocopiapite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.23 gm/cc
note: Specific Gravity of Aluminocopiapite =2.18 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0053943924
Boson Index = 0.9946056076
Help on Photoelectric: Photoelectric: PEAluminocopiapite = 6.36 barns/electron
U=PEAluminocopiapite x rElectron Density= 14.15 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aluminocopiapite is Not Radioactive
 

Aluminocopiapite Classification

Help on  Dana Class: Dana Class: 31.10.05.07 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.10)miscellaneous
  (31.10.05)Copiapite Group
 
31.10.05.01 Copiapite FeFe4(SO4)6(OH)2•20(H2O) P1 1
 
31.10.05.02 Magnesiocopiapite MgFe4(SO4)6(OH)2•20(H2O) P1 1
 
31.10.05.03 Cuprocopiapite CuFe4(SO4)6(OH)2•20(H2O) P1 1
 
31.10.05.04 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2•20(H2O) P1 1
 
31.10.05.05 Calciocopiapite CaFe4(SO4)6(OH)2•19(H2O) P1 1
 
31.10.05.06 Zincocopiapite ZnFe4(SO4)6(OH)2•18(H2O) P1 1
 
31.10.05.07 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2•20(H2O) P1 1
Help on  Strunz Class: Strunz Class: 07.DB.35 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DB -With only medium-sized cations; insular octahedra and finite groups
 
07.DB.35 Aluminocopiapite Al2/3Fe4(SO4)6O(OH)2•20(H2O) P1 1
 
07.DB.35 Copiapite FeFe4(SO4)6(OH)2•20(H2O) P1 1
 
07.DB.35 Calciocopiapite CaFe4(SO4)6(OH)2•19(H2O) P1 1
 
07.DB.35 Cuprocopiapite CuFe4(SO4)6(OH)2•20(H2O) P1 1
 
07.DB.35 Ferricopiapite Fe2/3Fe4(SO4)6(OH)2•20(H2O) P1 1
 
07.DB.35 Magnesiocopiapite MgFe4(SO4)6(OH)2•20(H2O) P1 1
 
07.DB.35 Zincocopiapite ZnFe4(SO4)6(OH)2•18(H2O) P1 1
 

Other Aluminocopiapite Information

Help on References: References: NAME( AntBidBlaNic5) 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 Aluminocopiapite :
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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Print or Cut-and-Paste your Aluminocopiapite Specimen Label here :

Aluminocopiapite

Al2/3Fe+++4(SO4)6O(OH)2•20(H2O)
Dana No: 31.10.05.07 Strunz No: 07.DB.35
Locality:

 

Notes:

 

 
   
 


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