Pyrobelonite Mineral Data + Say PYROBELONITE

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General Pyrobelonite Information
Help on Chemical Formula: Chemical Formula: PbMn(VO4)(OH)
Help on Composition: Composition: Molecular Weight = 394.08 gm
   Manganese  13.94 %  Mn   18.00 % MnO
   Vanadium   12.93 %  V    23.08 % V2O5
   Hydrogen    0.26 %  H     2.29 % H2O
   Lead       52.58 %  Pb   56.64 % PbO
   Oxygen     20.30 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbMn2+(VO4)(OH)
Help on Environment: Environment: Typically in metamorphosed Fe-Mn deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1919
Help on Locality: Locality: Långban mine, Bergslagen ore district, Filipstad, Värmland (Wermland), Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for "fire" and "needle", in allusion to the color and habit.
Help on Synonym: Synonym: ICSD 22301
  PDF 20-588
 

Pyrobelonite Image

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Pyrobelonite

Comments: Scanning electron microscope picture, showing idiomorphic pyrobelonite crystals (pb) growing on, and intergrown with brackebuschite (bk). (Eur. J. Mineral, 13:147).
Location: Mullock dumps lining the outcrop of the manganite vein south of Krettnich, Saarland, Germany. Scale: See Image.
© Eur. J. Mineral

Pyrobelonite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8039:1:0.6501
Help on Cell Dimensions: Cell Dimensions: a = 7.644, b = 9.508, c = 6.182, Z = 4; V = 449.30 Den(Calc)= 5.83
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.252(1), 2.643(0.7), 5.172(0.7),
Help on Forms: Forms:

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Forms: [ 0 3 1] [ 2 0 1] [ 1 1 1] [ 1 1 0] [ 2 2 1]

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Donaldson D M , Barnes W H , American Mineralogist , 40 (1955) p.580-596, The structures of the minerals of the descloizite and adelite groups: II -, pyrobelonite.

View Additional jPOWD Structure files for Pyrobelonite
[1]
 

Physical Properties of Pyrobelonite

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark red.
Help on Density: Density: 5.377
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Adamantine
Help on Streak: Streak: red orange
 

Optical Properties of Pyrobelonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.274 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.175 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2316,KPDmeas= 0.2511,KC= 0.197
Help on Optical Data: Optical Data: Biaxial (-), a=2.32, b=2.36, g=2.37, bire=0.0500, 2V(Calc)=52, 2V(Meas)=29. Dispersion r > v.
Help on Pleochroism (x): Pleochroism (x): shades of brown.
Help on Pleochroism (y): Pleochroism (y): shades of brown.
Help on Pleochroism (z): Pleochroism (z): shades of brown.
Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Bireflectance: RL Bireflectance: Observable.
Help on RL Color: RL Color: Gray with red and orange internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Pyrobelonite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   17.00   19.70 
   
 420 nm   16.70   19.30 
 440 nm   16.50   18.90 
 460 nm   16.20   18.50 
 480 nm   16.00   18.20 
 500 nm   15.70   17.80 
 520 nm   15.50   17.40 
 540 nm   15.20   17.00 
 560 nm   15.00   16.70 
 580 nm   14.80   16.50 
 600 nm   14.70   16.30 
 620 nm   14.60   16.10 
 640 nm   14.50   16.00 
 660 nm   14.30   15.80 
 680 nm   14.20   15.70 
 700 nm   14.10   15.60 
Calculated Relative Intensity Colors of Pyrobelonite in Air
Relative
Intensity		    0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 600%
R1                        
R2                        
 

Calculated Properties of Pyrobelonite

Help on Electron Density: Electron Density:

relectron=5.06 gm/cc
note: rPyrobelonite =5.83 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.11661
Boson Index = 0.88339
Help on Photoelectric: Photoelectric:

PEPyrobelonite = 936.74 barns/electron
U=PEPyrobelonite x relectron=4,739.40 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Pyrobelonite is Not Radioactive
 

Pyrobelonite Classification
Help on Dana Class: Dana Class: 41.5.2.3 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.5)where (A B)2 (XO4) Zq
  (41.5.2)Dana Group
 
41.5.2.1 Descloizite PbZn(VO4)(OH) Pnam 2/m 2/m 2/m
 
41.5.2.2 Mottramite PbCu(VO4)(OH) Pnam 2/m 2/m 2/m
 
41.5.2.3 Pyrobelonite PbMn(VO4)(OH) Pnam 2/m 2/m 2/m
 
41.5.2.4 Cechite Pb(Fe,Mn)(VO4)(OH) Pnam 2/m 2/m 2/m
 
41.5.2.5 Duftite-alpha PbCu(AsO4)(OH) P 212121 2 2 2
Help on Strunz Class: Strunz Class: VII/B.27-50 VII - Phosphates, Arsenates and Vanadates
  VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb
  VII/B.27 - Descloizite group
 
VII/B.27-10 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2
 
VII/B.27-20 Descloizite PbZn(VO4)(OH) Pnam 2/m 2/m 2/m
 
VII/B.27-30 Mottramite PbCu(VO4)(OH) Pnam 2/m 2/m 2/m
 
VII/B.27-40 Cechite Pb(Fe,Mn)(VO4)(OH) Pnam 2/m 2/m 2/m
 
VII/B.27-50 Pyrobelonite PbMn(VO4)(OH) Pnam 2/m 2/m 2/m
 

Other Pyrobelonite Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4)
Help on See Also: See Also: Links to other databases for Pyrobelonite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 - Franklin Minerals(Dunn) 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris

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Pyrobelonite

PbMn(VO4)(OH)
Dana No: 41.5.2.3 Strunz No: VII/B.27-50
Locality:

 

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