Scrutinyite Mineral Data

Scrutinyite Mineral Data
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General Scrutinyite Information

Help on Chemical Formula: Chemical Formula: PbO2
Help on Composition: Composition: Molecular Weight = 239.20 gm
   Lead    86.62 %  Pb  100.00 % PbO2
   Oxygen  13.38 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbO2
Help on Environment: Environment: Oxidized portions of Pb bearing deposits closely associated with plattnerite.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Sunshine #1 mine, Hansonburg district, Socorro County, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name alludes to the close scrutiny that is necessary to distinguish the mineral from its dimorph, plattnerite.
Help on Name Pronunciation: Name Pronunciation: Scrutinyite + Pronunciation Say SCRUTINYITE
Help on Synonym: Synonym: ICSD 20362
  PDF 45-1416
 

Scrutinyite Image

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Scrutinyite

Comments: Acicular crystals of scrutinyite.
Location: Hilarion Mine, Agios Konstantinos, Lavrion District, Attikí Prefecture, Greece. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Scrutinyite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8346:1:0.913
Help on Cell Dimensions: Cell Dimensions: a = 4.971, b = 5.956, c = 5.438, Z = 4; V = 161.00 Den(Calc)= 9.87
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bcn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.117(1), 1.84(0.8), 2.722(0.5),
Click Here for Large Scrutinyite Structure Window Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York, Note: known as alpha-PbO2

 

Physical Properties of Scrutinyite

Help on Cleavage: Cleavage: {100} Perfect, {010} Imperfect
Help on Color: Color: Dark reddish brown.
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: dark brown
 

Optical Properties of Scrutinyite

Help on Optical Data: Optical Data: NCalc= 2.04 - from Gladstone-Dale relationship (KC = 0.105) where Ncalc=Dcalc*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Weak, pale blue.
Help on RL Bireflectance: RL Bireflectance: Very weak, gray-white to bluish gray.
Help on RL Color: RL Color: Gray-white with reddish brown internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Scrutinyite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 546 nm   17.90   18.80 
   
 589 nm   17.00   17.90 
Calculated Relative Intensity Colors of Scrutinyite in Air
Relative
Intensity		    0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 510%
R1                      
R2                      
 

Calculated Properties of Scrutinyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=8.09 gm/cc
note: Specific Gravity of Scrutinyite =9.87 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.19
Boson Index = 0.81
Help on Photoelectric: Photoelectric: PEScrutinyite =1,622.85 barns/electron
U=PEScrutinyite x rElectron Density=13124.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Scrutinyite is Not Radioactive
 

Scrutinyite Classification
Help on Dana Class: Dana Class: 04.04.06.02 (04)Simple Oxides
  (04.04)with a cation charge of 4+ (A++++ O2)
  (04.04.06)Dana Group
 
04.04.06.01 Tellurite TeO2 P bca 2/m 2/m 2/m
 
04.04.06.02 Scrutinyite PbO2 P bcn 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 04.DB.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DB -With medium-sized cations; chains of edge-sharing octahedra
 
04.DB.20 Scrutinyite PbO2 P bcn 2/m 2/m 2/m
 

Other Scrutinyite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.75,p709,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Scrutinyite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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Scrutinyite

PbO2
Dana No: 04.04.06.02 Strunz No: 04.DB.20
Locality:

 

Notes: