Mineralogy Database

Beyerite Mineral Data

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General Beyerite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Pb)Bi2(CO3)2O2
Help on Composition: Composition: Molecular Weight = 651.84 gm
   Calcium   4.61 %  Ca    6.45 % CaO
   Bismuth  64.12 %  Bi   71.48 % Bi2O3
   Lead      7.95 %  Pb    8.56 % PbO
   Carbon    3.69 %  C    13.50 % CO2
   Oxygen   19.64 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.75Pb0.25Bi2(CO3)2O2
Help on Environment: Environment: Secondary mineral associated with bismuthite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1943
Help on Locality: Locality: Schneeberg, Sachsen (Saxony), Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for A. Beyer.
Help on Name Pronunciation: Name Pronunciation: Beyerite Say BEYERITE
Help on Synonym: Synonym: ICSD 36246
  PDF 22-1067

Beyerite Image

Click Here for Larger   Image in a New Browser Window Images:
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Comments: Greenish yellow crusts of beyerite on pegmatite.
Location: Harding Mine, Taos County, New Mexico, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Beyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9996:1:5.7564
Help on Cell Dimensions: Cell Dimensions: a = 3.7729, b = 3.7742, c = 21.726, Z = 2; V = 309.37 Den(Calc)= 7.00
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: I mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.84(1), 1.75(0.8), 2.14(0.8),

Physical Properties of Beyerite

Help on Cleavage: Cleavage: None
Help on Color: Color: Gray, Gray green, Yellow, Yellowish white, White.
Help on Density: Density: 6.56
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white

Optical Properties of Beyerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.055 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1538,KPDmeas= 0.1641,KC= 0.1628
Ncalc = 2.07 - 2.14
Help on Optical Data: Optical Data: Biaxial (?), a=1.97, b=2.13, g=2.13, bire=0.1600

Calculated Properties of Beyerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.59 gm/cc
note: Specific Gravity of Beyerite =6.56 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEBeyerite =1,355.93 barns/electron
U=PEBeyerite x rElectron Density=7,573.49 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Beyerite is Not Radioactive

Beyerite Classification

Help on  Dana Class: Dana Class: 16a.02.03.01 (16a)Carbonates - Hydroxyl or Halogen
  (16a.02)where (A B)3 (XO3)2 Zq
  (16a.02.03)Dana Group
16a.02.03.01 Beyerite (Ca,Pb)Bi2(CO3)2O2 I mmm 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 05.BE.35 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BE -With Pb, Bi
05.BE.35 Beyerite (Ca,Pb)Bi2(CO3)2O2 I mmm 2/m 2/m 2/m

Other Beyerite Information

Help on References: References: PHYS. PROP.(AmMin, Vol 88, p 478) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Beyerite :
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: 16a.02.03.01 Strunz No: 05.BE.35





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