Mineralogy Database

Fuloppite Mineral Data

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General Fuloppite Information

Help on Chemical  Formula: Chemical Formula: Pb3Sb8S15
Help on Composition: Composition: Molecular Weight = 2,076.59 gm
   Antimony  46.90 %  Sb
   Lead      29.93 %  Pb
   Sulfur    23.16 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb3Sb8S15
Help on Environment: Environment: Of hydrothermal origin.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1929
Help on Locality: Locality: Baia Mare, Satul-Mare, Rumania. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Dr. Bela Fulopp.
Help on Name Pronunciation: Name Pronunciation: Fuloppite + Pronunciation Say FULOPPITE
 

Fuloppite Image

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  Fuloppite

Comments: Gray crystals of fülöppite on quartz.
Location: Neue Hoffnung Gottes Mine, Bräunsdorf, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Fuloppite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4456:1:1.1454
Help on Cell Dimensions: Cell Dimensions: a = 16.9, b = 11.69, c = 13.39, Z = 4; beta = 94.72° V = 2,636.37 Den(Calc)= 5.23
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.87(1), 3.22(0.7), 2.96(0.4),
Help on Forms: Forms:

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Help on Above

Forms: ( 1 1 4) ( 1 1 2) ( 1 1 4) ( 1 1 2) ( 1 0 0) ( 0 0 1)

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Physical Properties of Fuloppite

Help on Color: Color: Gray, Bronze yellow, Steel blue.
Help on Density: Density: 5.22
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Metallic
Help on Streak: Streak: reddish gray
 

Optical Properties of Fuloppite

Help on RL Anisotrophism: RL Anisotrophism: Moderate in blue-green to red-brown.
Help on RL Color: RL Color: Bronzy white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Fuloppite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   33.70   42.60 
   
 420 nm   33.60   42.20 
 440 nm   33.50   41.80 
 460 nm   33.10   41.40 
 480 nm   32.50   40.80 
 500 nm   32.20   40.40 
 520 nm   32.00   40.20 
 540 nm   31.90   40.10 
 560 nm   31.70   40.00 
 580 nm   31.20   39.60 
 600 nm   30.50   38.80 
 620 nm   29.50   37.70 
 640 nm   28.40   36.40 
 660 nm   27.60   35.10 
 680 nm   26.90   34.30 
 700 nm   26.50   33.80 
Calculated Relative Intensity Colors of Fuloppite in Air
Relative
Intensity
   0%   40%   80% 100% 120% 160% 200% 240% 280% 300%
R1                    
R2                    
 

Calculated Properties of Fuloppite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.50 gm/cc
note: Specific Gravity of Fuloppite =5.23 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEFuloppite = 695.26 barns/electron
U=PEFuloppite x rElectron Density=3,130.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fuloppite is Not Radioactive
 

Fuloppite Classification

Help on  Dana Class: Dana Class: 03.06.20.01 (03)Sulfides - Sulfosalts
  (03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.06.20)Fuloppite Group (Monoclinc: C2/c containing Pb, Sb)
 
03.06.20.01 Fuloppite Pb3Sb8S15 C 2/c 2/m
 
03.06.20.02 Plagionite Pb5Sb8S17 C 2/c 2/m
 
03.06.20.03 Heteromorphite Pb7Sb8S19 C 2/c 2/m
 
03.06.20.04 Semseyite Pb9Sb8S21 C 2/c 2/m
 
03.06.20.05 Rayite (Ag,Tl)2Pb8Sb8S21 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 02.HC.10a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HC -With only Pb
 
02.HC.10a Fuloppite Pb3Sb8S15 C 2/c 2/m
 

Other Fuloppite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Fuloppite :
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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Fuloppite

Pb3Sb8S15
Dana No: 03.06.20.01 Strunz No: 02.HC.10a
Locality:

 

Notes:

 

 
   
 


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