Hydrobasaluminite Mineral Data

Hydrobasaluminite Mineral Data +

General Hydrobasaluminite Information

Chemical Formula:

Al4(SO4)(OH)10·12-36(H2O)

Composition:

Molecular Weight = 644.29 gm

Aluminum 16.75 % Al 31.65 % Al₂O₃

Hydrogen 6.26 % H 55.92 % H₂O

Sulfur 4.98 % S 12.43 % SO₃

Oxygen 72.01 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Al₄(SO₄)(OH)₁₀·15(H₂O)

Environment:

Precursor mineral to basaluminite.

IMA Status:

Valid Species (Pre-IMA) 1948

Locality:

Irchester and elsewhere in England. Link to MinDat.org Location Data.

Name Origin:

Named for the composition and relation to basaluminite.

Synonym:

Winebergite (discredited)

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Hydrobasaluminite Crystallography

Axial Ratios:

a:b:c =1.4921:1:1.3649

Cell Dimensions:

a = 14.911, b = 9.993, c = 13.64, Z = 4; beta = 112.24° V = 1,881.24 Den(Calc)= 2.27

Crystal System:

MonoclinicSpace Group: Unk.

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

By Intensity(I/I_o): 12.6(1), 5.29(0.7), 6.18(0.7),

Physical Properties of Hydrobasaluminite

Color:

White.

Density:

2.275

Fracture:

Elastic - Fragments which spring back after bending.

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Hydrobasaluminite

Optical Data:

NCalc= 1.63 - from Gladstone-Dale relationship (KC = 0.2776) where Ncalc=Dcalc*KC+1
NCalc= 1.63 - from Gladstone-Dale relationship (KC = 0.2776) where Ncalc=Dmeas*KC+1

Calculated Properties of Hydrobasaluminite

Electron Density:

r_electron=2.40 gm/cc
note: r_{Hydrobasaluminite}=2.27 gm/cc.

Fermion Index

Fermion Index = 0.00072
Boson Index = 0.99928

Photoelectric:

PE_{Hydrobasaluminite}= 0.95 barns/electron
U=PE_{Hydrobasaluminite} x r_electron= 2.28 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hydrobasaluminite is Not Radioactive

Hydrobasaluminite Classification

Dana Class:

31.4.6.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.4)where (A+ B++)4 (XO4) Zq·x(H2O)

(31.4.6)Dana Group

31.4.6.1 Hydrobasaluminite Al4(SO4)(OH)10·12-36(H2O) Unk. Mono

Strunz Class:

VI/D.06-70 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 Hydrobasaluminite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Hydrobasaluminite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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

Hydrobasaluminite

Al4(SO4)(OH)10·12-36(H2O)
Dana No: 31.4.6.1 Strunz No: VI/D.06-70
Locality:

Notes: