Meta-aluminite Mineral Data


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General Meta-aluminite Information

Help on Chemical  Formula: Chemical Formula: Al2(SO4)(OH)4·5(H2O)
Help on Composition: Composition: Molecular Weight = 308.13 gm
   Aluminum  17.51 %  Al   33.09 % Al2O3
   Hydrogen   4.58 %  H    40.93 % H2O
   Sulfur    10.41 %  S    25.98 % SO3
   Oxygen    67.50 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al2(SO4)(OH)4·5(H2O)
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: Fumerole uranium mine, Temple Mountain, San Rafael Swell, Every County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the lower hydrate of aluminite.
 

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Meta-aluminite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4698:1:0.4356
Help on Cell Dimensions: Cell Dimensions: a = 7.93, b = 16.879, c = 7.353, Z = 4; beta = 106.74° V = 942.49 Den(Calc)= 2.17
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c ?
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.48(1), 8.35(0.79), 4.36(0.67),
 

Physical Properties of Meta-aluminite

Help on Color: Color: Snow white.
Help on Density: Density: 1.85 - 2.18, Average = 2.01
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luster: Luster: Silky
Help on Streak: Streak: white
 

Optical Properties of Meta-aluminite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.078 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2338,KPDmeas= 0.2518,KC= 0.2536
Help on Optical Data: Optical Data: Biaxial (-), a=1.497, b=1.512, g=1.513, bire=0.0160
 

Calculated Properties of Meta-aluminite

Help on Electron Density: Electron Density:

relectron=2.09 gm/cc
note: rMeta-aluminite =2.02 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00111
Boson Index = 0.99889
Help on Photoelectric: Photoelectric:

PEMeta-aluminite = 1.25 barns/electron
U=PEMeta-aluminite x relectron= 2.61 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Meta-aluminite is Not Radioactive

 

Meta-aluminite Classification

Help on  Dana Class: Dana Class: 31.7.5.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.7)where (A+ B++)2 (XO4) Zq·x(H2O)
  (31.7.5)Dana Group
 
31.7.5.1 Meta-aluminite Al2(SO4)(OH)4·5(H2O) P 21/c ? 2/m
Help on  Strunz Class: Strunz Class: VI/D.06-30 VI - Sulfates,Chromates,Molybdates and Tungstates
  VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size
  VI/D.06 - Aluminite series, Jurbanite - Zaherite
 
VI/D.06-10 Jurbanite Al(SO4)(OH)·5(H2O) P 21/n 2/m
 
VI/D.06-20 Khademite Al(SO4)F·5(H2O) Pcab 2/m 2/m 2/m
 
VI/D.06-20* Rostite AlSO4(OH,F)·5(H2O) Pcba 2/m 2/m 2/m
 
VI/D.06-30 Meta-aluminite Al2(SO4)(OH)4·5(H2O) P 21/c ? 2/m
 
VI/D.06-40 Aluminite Al2(SO4)(OH)4·7(H2O) P 21/c 2/m
 
VI/D.06-50 Basaluminite Al4(SO4)(OH)10·5(H2O) P 21 2
 
VI/D.06-60 Felsobanyaite Al4(SO4)(OH)10·5(H2O) Unk Hex
 
VI/D.06-70 Hydrobasaluminite Al4(SO4)(OH)10·12-36(H2O) Unk. Mono
 
VI/D.06-80 Zaherite Al12(SO4)5(OH)26·20H20 P1 or P1 Tri
 

Other Meta-aluminite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Meta-aluminite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Print or Cut-and-Paste your Meta-aluminite Specimen Label here :

Meta-aluminite

Al2(SO4)(OH)4·5(H2O)
Dana No: 31.7.5.1 Strunz No: VI/D.06-30
Locality:

 

Notes:

 

 
   
 
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