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Hydrobasaluminite Mineral Data
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General Hydrobasaluminite Information
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 Chemical Formula: |
Al4(SO4)(OH)10•12-36(H2O) |
| Composition: |
Molecular Weight = 644.29 gm |
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Aluminum 16.75 % Al 31.65 % Al2O3 |
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Hydrogen 6.26 % H 55.92 % H2O |
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Sulfur 4.98 % S 12.43 % SO3 |
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Oxygen 72.01 % O |
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______ ______ |
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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. |
| Name Pronunciation: |
Hydrobasaluminite + Pronunciation  |
| Synonym: |
Winebergite (discredited) |
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Hydrobasaluminite Crystallography
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| 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: |
Monoclinic Space Group: Unk. |
| X Ray Diffraction: |
By Intensity(I/Io): 12.6(1), 5.29(0.7), 6.18(0.7), |
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Physical Properties of Hydrobasaluminite
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| 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 |
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Optical Properties of Hydrobasaluminite
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| 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
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Calculated Properties of Hydrobasaluminite
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| Electron Density: |
Bulk Density (Electron Density)=2.40 gm/cc
note: Specific Gravity of Hydrobasaluminite =2.27 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0007283251
Boson Index = 0.9992716749 |
| Photoelectric: |
PEHydrobasaluminite = 0.95 barns/electron
U=PEHydrobasaluminite x rElectron Density= 2.28 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydrobasaluminite is Not Radioactive |
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Hydrobasaluminite Classification
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| Dana Class: |
31.04.06.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen |
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(31.04)where (A+ B++)4 (XO4) Zq�x(H2O) |
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(31.04.06)Dana Group |
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31.04.06.01 Hydrobasaluminite Al4(SO4)(OH)10•12-36(H2O) Unk. Mono |
| Strunz Class: |
07.DE.60 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DE -With only medium-sized cations; unclassified |
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07.DE.60 Hydrobasaluminite Al4(SO4)(OH)10•12-36(H2O) Unk. Mono |
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Other Hydrobasaluminite Information
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| 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 - 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 Hydrobasaluminite Specimen Label here :
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Hydrobasaluminite
Al4(SO4)(OH)10•12-36(H2O)
Dana No: 31.04.06.01 Strunz No: 07.DE.60
Locality:
Notes:
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