Mineralogy Database

Moeloite Mineral Data

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General Moeloite Information

Help on Chemical  Formula: Chemical Formula: Pb6Sb6S14(S3)
Help on Composition: Composition: Molecular Weight = 2,518.82 gm
   Antimony  29.00 %  Sb
   Lead      49.36 %  Pb
   Sulfur    21.64 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb6Sb6S17
Help on Environment: Environment: Small cavities in marble.
Help on IMA Status: IMA Status: Approved IMA 2002, Dana # Added
Help on Locality: Locality: Ceragiola marble quarry near Seravezza, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Yves Moelo who synthesized and characterized the synthetic material prior to the discovery of the mineral.
Help on Synonym: Synonym: IMA1998-045

Moeloite Image

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Comments: Dark gray, metallic grains of moelite on white dolomite.
Location: Cava Ceragiola, Seravezza, Lucca, Italy. Scale: Picture size 2 cm.
© Dave Barthelmy

Moeloite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.794:1:5.7064
Help on Cell Dimensions: Cell Dimensions: a = 15.328, b = 4.04, c = 23.054, Z = 2; V = 1,427.62 Den(Calc)= 5.86
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 21221
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.427(1)(403), 2.017(0.8)(614,020), 2.753(0.75),2.779(0.75)(016,314), 2.844(0.75)(503,215), 3.047(0.75)(312,214), 3.724(0.75)(106,112), 1.733(0.5)(0.1.12,618,2.02.422(0.5),

Physical Properties of Moeloite

Help on Color: Color: Grayish black, Brownish red.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Plumose - "Mica-like" minerals forming aggregates of plume-like forms.
Help on Luster: Luster: Metallic
Help on Streak: Streak: brown

Optical Properties of Moeloite

Help on RL Anisotrophism: RL Anisotrophism: Moderate.
Help on RL Bireflectance: RL Bireflectance: Weak.
Help on RL Color: RL Color: White with rare red internal reflections in oil.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Moeloite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   40.00   37.80 
 546 nm   38.80   36.50 
 589 nm   38.60   36.70 
 650 nm   36.50   34.70 
Standardized Intensity (100%) Reflection Spectra of Moeloite in Oil
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   26.60   24.20 
 546 nm   24.90   22.80 
 589 nm   23.40   21.40 
 650 nm   21.20   20.10 
Calculated Relative Intensity Colors of Moeloite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 250%
Calculated Relative Intensity Colors of Moeloite in Oil
   0%   50% 100% 150% 200% 250% 300% 350% 400% 420%

Calculated Properties of Moeloite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.98 gm/cc
note: Specific Gravity of Moeloite =5.86 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEMoeloite = 993.49 barns/electron
U=PEMoeloite x rElectron Density=4,946.28 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Moeloite is Not Radioactive

Moeloite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.04.08)Dana Group Wittichenite Cu3BiS3 P 212121 2 2 2 Skinnerite Cu3SbS3 P 21/c 2/m Moeloite! Pb6Sb6S14(S3) P 21221 2 2 2
Help on  Strunz Class: Strunz Class: 02.HC.25 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.25 Moeloite! Pb6Sb6S14(S3) P 21221 2 2 2

Other Moeloite Information

Help on References: References: NAME( AmMin, Vol 88, p 477) PHYS. PROP.(AmMin, Vol 88, p 477) OPTIC PROP.(AmMin, Vol 88, p 477)
Help on See Also: See Also: Links to other databases for Moeloite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 02.HC.25





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