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Mangazeite Mineral Data

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General Mangazeite Information

Help on Chemical  Formula: Chemical Formula: Al2(SO4)(OH)4•3H2O
Help on Composition: Composition: Molecular Weight = 278.44 gm
   Aluminum  19.28 %  Al   36.44 % Al2O3
   Hydrogen   3.87 %  H    34.55 % H2O
   Sulfur    11.63 %  S    29.04 % SO3
   Oxygen    65.22 %  O
            ______        ______ 
            100.00 %      100.03 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al1.99(SO4)1.01(OH)3.94•3.37(H2O)
Help on Environment: Environment: Found as a supergene mineral in fractured, sericitized, and pyritized granodiorite adjacent to a quartz-arsenopyrite vein. Aluminite group.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Mangazeiskoye silver ore deposit, Eastern Yakutia, Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA2005-021a

Mangazeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8828:1:1.2093
Help on Cell Dimensions: Cell Dimensions: a = 8.286, b = 9.385, c = 11.35, Z = 4; alpha = 96.1°, beta = 98.9°, gamma = 96.6° V = 861.31 Den(Calc)= 2.15
Help on Crystal System: Crystal System: Triclinic Space Group: P1 or P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.258(1), 7.59(0.49), 4.06(0.48),7.16(0.46), 3.921(0.43), 8.14(0.19), 4.52(0.13), 3.795(0.12),

Physical Properties of Mangazeite

Help on Color: Color: White, Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 1 - Talc
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Mangazeite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.019 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2488,KC= 0.2443
Ncalc = 1.53
Help on Optical Data: Optical Data: Biaxial (?), a=1.525, g=1.545, bire=0.0200

Calculated Properties of Mangazeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.22 gm/cc
note: Specific Gravity of Mangazeite =2.15 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0011912149
Boson Index = 0.9988087851
Help on Photoelectric: Photoelectric: PEMangazeite = 1.35 barns/electron
U=PEMangazeite x rElectron Density= 3.00 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mangazeite is Not Radioactive

Mangazeite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.07)where (A+ B++)2 (XO4) Zq�x(H2O)
  (31.07.04)Dana Group Aluminite Al2(SO4)(OH)4•7(H2O) P 21/c 2/m Mangazeite! Al2(SO4)(OH)4•3H2O P1 or P1 Tri
Help on  Strunz Class: Strunz Class: 07.DE.05 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DE -With only medium-sized cations; unclassified
07.DE.05 Mangazeite! Al2(SO4)(OH)4•3H2O P1 or P1 Tri

Other Mangazeite Information

Help on References: References: NAME( Geology of Ore Deposits, v49:514) PHYS. PROP.(Geology of Ore Deposits, v49:514) OPTIC PROP.(Geology of Ore Deposits, v49:514)
Help on See Also: See Also: Links to other databases for Mangazeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 07.DE.05





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