Mineralogy Database

Quenselite Mineral Data

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General Quenselite Information

Help on Chemical  Formula: Chemical Formula: PbMn+++O2(OH)
Help on Composition: Composition: Molecular Weight = 311.14 gm
   Manganese  17.66 %  Mn   25.37 % Mn2O3
   Hydrogen    0.32 %  H     2.90 % H2O
   Lead       66.59 %  Pb   71.74 % PbO
   Oxygen     15.43 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbMn3+O2(OH)
Help on Environment: Environment: In iron ore associated with calcite and barite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1926
Help on Locality: Locality: Langbanshyttan, Vermland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Percy Dudgeon Quensel (1881-1966), Swidish mineralogist and petrolgist, Stockholm University, Sweden.
Help on Name Pronunciation: Name Pronunciation: Quenselite + Pronunciation Say QUENSELITE
Help on Synonym: Synonym: ICSD 15234
  PDF 23-351
 

Quenselite Image

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  Quenselite

Comments: Square crystal of quenselite on matrix.
Location: Langban, Sweden. Scale: Crystal size 1 mm.
© John Veevaert

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  Quenselite

Comments: Jet black tabular crystals of quenselite, some striated on matrix.
Location: Langban, Varmland, Sweden. Scale: Crystal size 1.75mm.
© Tom Loomis / Dakota Matrix

Quenselite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9876:1:1.6126
Help on Cell Dimensions: Cell Dimensions: a = 5.61, b = 5.68, c = 9.16, Z = 4; beta = 93.3° V = 291.40 Den(Calc)= 7.09
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: P 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.04(1), 2.72(0.8), 3.68(0.7),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 1 1) ( 0 1 0) ( 0 1 1) ( 3 0 1) ( 1 0 0) ( 1 1 0) ( 0 0 1)

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Physical Properties of Quenselite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Pitch black.
Help on Density: Density: 6.842
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: dark brownish gray
 

Optical Properties of Quenselite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.046 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1834,KPDmeas= 0.19,KC= 0.1816
Ncalc = 2.24 - 2.29
Help on Optical Data: Optical Data: Biaxial (+), a=2.3
Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Quenselite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   28.10   32.60 
   
 420 nm   26.70   30.90 
 440 nm   25.30   29.20 
 460 nm   24.00   27.70 
 480 nm   23.00   26.30 
 500 nm   22.10   25.10 
 520 nm   21.40   24.20 
 540 nm   20.80   23.40 
 560 nm   20.40   22.80 
 580 nm   20.00   22.20 
 600 nm   19.70   21.80 
 620 nm   19.50   21.50 
 640 nm   19.40   21.30 
 660 nm   19.20   21.00 
 680 nm   19.20   20.90 
 700 nm   19.20   20.90 
Calculated Relative Intensity Colors of Quenselite in Air
Relative
Intensity
   0%   50% 100% 150% 200% 250% 300% 350% 400% 430%
R1                    
R2                    
 

Calculated Properties of Quenselite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.02 gm/cc
note: Specific Gravity of Quenselite =7.09 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.14
Boson Index = 0.86
Help on Photoelectric: Photoelectric: PEQuenselite =1,209.97 barns/electron
U=PEQuenselite x rElectron Density=7,278.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Quenselite is Not Radioactive
 

Quenselite Classification

Help on  Dana Class: Dana Class: 06.04.01.02 (06)Hydroxides and Oxides Containing Hydroxyl
  (06.04)containing multiple cations
  (06.04.01)Dana Group
 
06.04.01.01 Lithiophorite (Al,Li)MnO2(OH)2 R 3m 3 2/m
 
06.04.01.02 Quenselite PbMnO2(OH) P 2 2
Help on  Strunz Class: Strunz Class: 04.FE.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
 
04.FE.30 Quenselite PbMnO2(OH) P 2 2
 

Other Quenselite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Quenselite :
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 Quenselite Specimen Label here :

Quenselite

PbMn+++O2(OH)
Dana No: 06.04.01.02 Strunz No: 04.FE.30
Locality:

 

Notes:

 

 
   
 


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