Mineralogy Database

Jurbanite Mineral Data

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General Jurbanite Information

Help on Chemical  Formula: Chemical Formula: Al(SO4)(OH)•5(H2O)
Help on Composition: Composition: Molecular Weight = 230.13 gm
   Aluminum  11.72 %  Al   22.15 % Al2O3
   Hydrogen   4.82 %  H    43.06 % H2O
   Sulfur    13.93 %  S    34.79 % SO3
   Oxygen    69.52 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(SO4)(OH)•5(H2O)
Help on Environment: Environment: Secondary crusts in humid tunnels in oxidized portions of sulfide deposits in aluminous rocks; apparently deposited directly from mine water at about 27 deg C and 100% humidity.
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: San Manuel mine, Mammoth district, Pinal Co., Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Joseph John Urban (1915-1997), Tucson, Arizona, USA, mineral collector who first observed the natural material.
Help on Name Pronunciation: Name Pronunciation: Jurbanite + Pronunciation Say JURBANITE
Help on Synonym: Synonym: ICSD 61493
  PDF 29.89

Jurbanite Image

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Comments: White spherical crusts of jurbanite on matrix.
Location: Le Cetine Mine, Siena, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jurbanite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6721:1:0.6531
Help on Cell Dimensions: Cell Dimensions: a = 8.3913, b = 12.4846, c = 8.1545, Z = 4; beta = 101.9° V = 835.92 Den(Calc)= 1.83
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.723(1), 4.013(0.9), 6.8(0.8),

Physical Properties of Jurbanite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless.
Help on Density: Density: 1.786
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Jurbanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2577,KPDmeas= 0.2641,KC= 0.2538
Ncalc = 1.45 - 1.46
Help on Optical Data: Optical Data: Biaxial (-), a=1.459, b=1.473, g=1.483, bire=0.0240, 2V(Calc)=78, 2V(Meas)=80.

Calculated Properties of Jurbanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.91 gm/cc
note: Specific Gravity of Jurbanite =1.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013859852
Boson Index = 0.9986140148
Help on Photoelectric: Photoelectric: PEJurbanite = 1.30 barns/electron
U=PEJurbanite x rElectron Density= 2.47 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jurbanite is Not Radioactive

Jurbanite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.09)where (A+ B++) (XO4) Zq�x(H2O)
  (31.09.10)Dana Group Jurbanite Al(SO4)(OH)•5(H2O) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 07.DB.15 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.15 Jurbanite Al(SO4)(OH)•5(H2O) P 21/n 2/m

Other Jurbanite 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 Jurbanite :
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.DB.15





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