Mineralogy Database

Bismite Mineral Data

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General Bismite Information

Help on Chemical  Formula: Chemical Formula: Bi2O3
Help on Composition: Composition: Molecular Weight = 465.96 gm
   Bismuth  89.70 %  Bi  100.00 % Bi2O3
   Oxygen   10.30 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Bi2O3
Help on Environment: Environment: Oxidation product of various bismuth minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: Goldfield, Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its composition of Bi.
Help on Name Pronunciation: Name Pronunciation: Bismite Say BISMITE
Help on Synonym: Synonym: ICSD 15072
  PDF 41-1449

Bismite Image

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Comments: Tan, massive bismite with quartz.
Location: Schneeberg, Sachsen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Waylandite   Bismite

Comments: Gray massive stream rounded waylandite with tan bismite crusts.
Location: Mumba, Nord-Kivu, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bismite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7162:1:0.9189
Help on Cell Dimensions: Cell Dimensions: a = 5.83, b = 8.14, c = 7.48, Z = 4; beta = 67.066° V = 326.91 Den(Calc)= 9.47
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.253(1), 2.693(0.4), 2.708(0.4),

Physical Properties of Bismite

Help on Cleavage: Cleavage: None
Help on Color: Color: Green yellow, Gray green, Yellow.
Help on Density: Density: 8.5 - 9.5, Average = 9
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Pulverulent - Forms a loose, poorly-coherent powdery mass.
Help on Habit: Habit: Scaly - Morphology like fish scales.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: light yellow

Optical Properties of Bismite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.339 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.372 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.0961,KPDmeas= 0.1011,KC= 0.153
Ncalc = 2.3 - 2.45
Help on Optical Data: Optical Data: Uniaxial (-), e=1.82, w=2, bire=0.1800.

Calculated Properties of Bismite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.34 gm/cc
note: Specific Gravity of Bismite =9.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0000503415
Boson Index = 0.9999496585
Help on Photoelectric: Photoelectric: PEBismite =1,770.07 barns/electron
U=PEBismite x rElectron Density=12991.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bismite is Not Radioactive

Bismite Classification

Help on  Dana Class: Dana Class: (04)Simple Oxides
  (04.03)with a cation charge of 3+ (A+++2 O3)
  (04.03.10)Claudetite group Claudetite As2O3 P 21/n 2/m Bismite Bi2O3 P 21/c 2/m Stibioclaudetite! AsSbO3 P 21/n 2/m
Help on  Strunz Class: Strunz Class: 04.CB.60 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.C - Metal:Oxygen = 2:3, 3:5, and Similar
  04.CB -With medium-sized cations
04.CB.60 Bismite Bi2O3 P 21/c 2/m

Other Bismite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Bismite :
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: 04.CB.60





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