Perite Mineral Data

Perite Mineral Data
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General Perite Information

Help on Chemical Formula: Chemical Formula: PbBiO2Cl
Help on Composition: Composition: Molecular Weight = 483.63 gm
   Bismuth   43.21 %  Bi   48.17 % Bi2O3
   Lead      42.84 %  Pb   46.15 % PbO
   Chlorine   7.33 %  Cl    7.33 % Cl
               -   %   Cl   -1.65 % -O=Cl2   
   Oxygen     6.62 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbBiO2Cl
Help on Environment: Environment: Fissures in skarn in a metamorphosed Fe-Mn deposit.
Help on IMA Status: IMA Status: Approved IMA 1960
Help on Locality: Locality: Langban, V¨armland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Per Adolf Geijer (1886-1976), Swedish economic geologist with the Geological Survey of Sweden.
Help on Name Pronunciation: Name Pronunciation: Perite Say PERITE
Help on Synonym: Synonym: ICSD 31860
  PDF 13-352
 

Perite Image

Click Here for Larger Perite Image in a New Browser Window Images:
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Perite

Comments: Pale yellow scaly crystalline perite on quartz.
Location: Benson, Cochise County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Perite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0093:1:2.2286
Help on Cell Dimensions: Cell Dimensions: a = 5.627, b = 5.575, c = 12.425, Z = 4; V = 389.78 Den(Calc)= 8.24
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Bmmb
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.86(1), 1.62(0.9), 3.77(0.8),
Click Here for Large Perite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Gillberg M , Arkiv for Mineralogi och Geologi , 2 (1960) p.565-570, Perite, a new oxyhalide mineral from Langban, Sweden, Locality: Langban, Sweden

 

Physical Properties of Perite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Brownish yellow, Yellow, Sulfur yellow.
Help on Density: Density: 8.16
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: yellow
 

Optical Properties of Perite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1638,KPDmeas= 0.1654,KC= 0.1582
Ncalc = 2.29 - 2.3
Help on Optical Data: Optical Data: Biaxial (+), b=2.35
 

Calculated Properties of Perite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.75 gm/cc
note: Specific Gravity of Perite =8.24 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEPerite =1,653.05 barns/electron
U=PEPerite x rElectron Density=11153.05 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Perite is Not Radioactive
 

Perite Classification
Help on Dana Class: Dana Class: 10.02.05.01 (10)Oxyhalides and Hydroxyhalides
  (10.02)where A (O,OH) Xq
  (10.02.05)Perite Series
 
10.02.05.01 Perite PbBiO2Cl Bmmb 2/m 2/m 2/m
 
10.02.05.02 Nadorite PbSbO2Cl Bmmb 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 03.DC.30 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DC -With Pb (As,Sb,Bi), without Cu
 
03.DC.30 Nadorite PbSbO2Cl Bmmb 2/m 2/m 2/m
 
03.DC.30 Perite PbBiO2Cl Bmmb 2/m 2/m 2/m
 

Other Perite Information
Help on References: References: NAME( AntBidBlaNic3) 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 Perite :
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
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Perite Specimen Label here :

Perite

PbBiO2Cl
Dana No: 10.02.05.01 Strunz No: 03.DC.30
Locality:

 

Notes: