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Basaluminite Mineral Data

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General Basaluminite Information

Help on Chemical  Formula: Chemical Formula: Al4(SO4)(OH)10•5(H2O)
Help on Composition: Composition: Molecular Weight = 464.14 gm
   Aluminum  23.25 %  Al   43.94 % Al2O3
   Hydrogen   4.34 %  H    38.81 % H2O
   Sulfur     6.91 %  S    17.25 % SO3
   Oxygen    65.50 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al4(SO4)(OH)10•5(H2O)
Help on Environment: Environment: Basaluminite (1948) is Felsob�nyaite (1853)
Help on IMA Status: IMA Status: Discredited IMA 2006
Help on Locality: Locality: Irchester, Northamptonshire and Clifton Hill, Brighton, Sussex, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the composition (basic sulfate of aluminum).
Help on Name Pronunciation: Name Pronunciation: Basaluminite + Pronunciation Say BASALUMINITE

Basaluminite Image

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Comments: Clear, radial sprays of basaluminite crystals.
Location: Lavender Pit, Bisbee, Cochise County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Basaluminite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2948:1:1.1059
Help on Cell Dimensions: Cell Dimensions: a = 12.954, b = 10.004, c = 11.064, Z = 4; beta = 104.1° V = 1,390.61 Den(Calc)= 2.22
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: P 21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.4(1), 4.68(0.8), 3.68(0.7),

Physical Properties of Basaluminite

Help on Color: Color: White, Yellow, Orange, Brown.
Help on Density: Density: 2.12
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Hardness: Hardness: 1.5 - Between Talc and Gypsum
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white

Optical Properties of Basaluminite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.038 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2329,KPDmeas= 0.2439,KC= 0.2534
Ncalc = 1.54 - 1.56
Help on Optical Data: Optical Data: Uniaxial (+), w=1.515-1.519, e=1.515-1.519, bire=0.0000.

Calculated Properties of Basaluminite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.19 gm/cc
note: Specific Gravity of Basaluminite =2.12 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0008390436
Boson Index = 0.9991609564
Help on Photoelectric: Photoelectric: PEBasaluminite = 1.20 barns/electron
U=PEBasaluminite x rElectron Density= 2.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Basaluminite is Not Radioactive

Basaluminite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.04)where (A+ B++)4 (XO4) Zq�x(H2O)
  (31.04.05)Dana Group Basaluminite? Al4(SO4)(OH)10•5(H2O) P 21 2
Help on  Strunz Class: Strunz Class: 07.DD.05 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DD -With only medium-sized cations; sheets of edge-sharing octahedra
07.DD.05 Basaluminite? Al4(SO4)(OH)10•5(H2O) P 21 2
07.DD.05 Felsobanyaite Al4(SO4)(OH)10•5(H2O) Unk Hex

Other Basaluminite Information

Help on References: References: 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 Basaluminite :
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: 07.DD.05





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