Mineralogy Database

Bouazzerite Mineral Data

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General Bouazzerite Information

Help on Chemical  Formula: Chemical Formula: Bi6(Mg,Co)11Fe14[AsO4]18O12(OH)4(H2O)86
Help on Composition: Composition: Molecular Weight = 6,531.63 gm
   Calcium     0.14 %  Ca    0.20 % CaO
   Magnesium   3.14 %  Mg    5.21 % MgO
   Chromium    0.51 %  Cr    0.98 % CrO3
   Iron       10.77 %  Fe   15.40 % Fe2O3
   Cobalt      0.43 %  Co    0.55 % CoO
   Silicon     0.14 %  Si    0.29 % SiO2
   Nickel      0.11 %  Ni    0.14 % NiO
   Bismuth    19.65 %  Bi   21.90 % Bi2O3
   Arsenic    19.50 %  As   29.91 % As2O5
   Hydrogen    2.84 %  H    25.38 % H2O
   Oxygen     42.77 %  O
             ______        ______ 
             100.00 %       99.96 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula:
Help on Environment: Environment: From weathering of a Variscan hydrothermal As-Co-Ni-Ag-Au vein. New structure type.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: "Filon 7", Bou Azzer, Anti-Atlas, Morocco Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name recognizes the exceptional significance of the Bou Azzer district and, in particular, of the Bou Azzer mine to mineralogical sciences and mineral collecting.
Help on Synonym: Synonym: IMA2005-042

Bouazzerite Image

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Comments: SEM image of prismatic bouazzerite crystals associated with botryoidal powellite and minute cubic crystals of alumopharmacosiderite.
Location: From the "Filon 7" (French for Vein 7) through "Puits 1" (shaft 1), Bou Azzer mine, Anti-Atlas, Morocco.. Scale: See Image.
© American Mineralogist

Bouazzerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4474:1:0.606
Help on Cell Dimensions: Cell Dimensions: a = 13.6322, b = 30.469, c = 18.4671, Z = 2; beta = 91.134° V = 7,668.98 Den(Calc)= 2.83
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): 11.79(1)(021), 7.9(0.8)(022), 10.16(0.8)(120),10.98(0.8)(101), 12.45(0.7)(110), 15.78(0.6)(011), 3.153(0.4)(353), 3.414(0.4)(333),

Physical Properties of Bouazzerite

Help on Cleavage: Cleavage: {100} Good, {021} Distinct
Help on Color: Color: Apple green.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Triangular Crystals - Occurs as triangular shaped crystals.
Help on Luster: Luster: Adamantine
Help on Streak: Streak: white

Optical Properties of Bouazzerite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2327,KC= 0.2327
Ncalc = 1.66
Help on Optical Data: Optical Data: Biaxial (?), a=1.657, g=1.66, bire=0.0030

Calculated Properties of Bouazzerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.70 gm/cc
note: Specific Gravity of Bouazzerite =2.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0062003942
Boson Index = 0.9937996058
Help on Photoelectric: Photoelectric: PEBouazzerite = 347.79 barns/electron
U=PEBouazzerite x rElectron Density= 940.67 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bouazzerite is Not Radioactive

Bouazzerite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.17)Dana Group Bouazzerite! Bi6(Mg,Co)11Fe14[AsO4]18O12(OH)4(H2O)86 P 21/n 2/m
Help on  Strunz Class: Strunz Class: 08.DH.60 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1
08.DH.60 Bouazzerite! Bi6(Mg,Co)11Fe14[AsO4]18O12(OH)4(H2O)86 P 21/n 2/m

Other Bouazzerite Information

Help on References: References: NAME( AmMin, v92:1630) PHYS. PROP.(AmMin, v92:1630) OPTIC PROP.(AmMin, v92:1630)
Help on See Also: See Also: Links to other databases for Bouazzerite :
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: 08.DH.60





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