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Moeloite Mineral Data
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General Moeloite Information
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 Chemical Formula: |
Pb6Sb6S14(S3) |
| Composition: |
Molecular Weight = 2,518.82 gm |
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Antimony 29.00 % Sb |
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Lead 49.36 % Pb |
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Sulfur 21.64 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Pb6Sb6S17 |
| Environment: |
Small cavities in marble. |
| IMA Status: |
Approved IMA 2002, Dana # Added |
| Locality: |
Ceragiola marble quarry near Seravezza, Tuscany, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Yves Moelo who synthesized and characterized the synthetic material prior to the discovery of the mineral. |
| Synonym: |
IMA1998-045 |
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Moeloite Image |
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Images:
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Moeloite
Comments: Dark gray, metallic grains of moelite on white dolomite.
Location: Cava Ceragiola, Seravezza, Lucca, Italy.
Scale: Picture size 2 cm.
© Dave Barthelmy |
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Moeloite Crystallography
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| Axial Ratios: |
a:b:c =3.794:1:5.7064 |
| Cell Dimensions: |
a = 15.328, b = 4.04, c = 23.054, Z = 2; V = 1,427.62 Den(Calc)= 5.86 |
| Crystal System: |
Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 21221 |
| 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), |
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Physical Properties of Moeloite
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| Color: |
Grayish black, Brownish red. |
| Diaphaneity: |
Opaque |
| Fracture: |
Flexible - Flexible fragments. |
| Habit: |
Acicular - Occurs as needle-like crystals. |
| Habit: |
Plumose - "Mica-like" minerals forming aggregates of plume-like forms. |
| Luster: |
Metallic |
| Streak: |
brown |
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Optical Properties of Moeloite
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| RL Anisotrophism: |
Moderate. |
| RL Bireflectance: |
Weak. |
| RL Color: |
White with rare red internal reflections in oil. |
| RL Pleochroism: |
None. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Moeloite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
40.00 |
37.80 |
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| 546 nm |
38.80 |
36.50 |
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| 589 nm |
38.60 |
36.70 |
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| 650 nm |
36.50 |
34.70 |
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Standardized Intensity (100%) Reflection Spectra of Moeloite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
26.60 |
24.20 |
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| 546 nm |
24.90 |
22.80 |
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| 589 nm |
23.40 |
21.40 |
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| 650 nm |
21.20 |
20.10 |
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Calculated Relative Intensity Colors of Moeloite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
250% |
| R1 |
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| R2 |
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Calculated Relative Intensity Colors of Moeloite in Oil
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
420% |
| R1 |
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| R2 |
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Calculated Properties of Moeloite
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| Electron Density: |
Bulk Density (Electron Density)=4.98 gm/cc
note: Specific Gravity of Moeloite =5.86 gm/cc.
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| Fermion Index: |
Fermion Index = 0.11
Boson Index = 0.89 |
| Photoelectric: |
PEMoeloite = 993.49 barns/electron
U=PEMoeloite x rElectron Density=4,946.28 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Moeloite is Not Radioactive |
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Moeloite Classification
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| Dana Class: |
03.04.08.03 (03)Sulfides - Sulfosalts |
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(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.04.08)Dana Group |
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03.04.08.01 Wittichenite Cu3BiS3 P 212121 2 2 2 |
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03.04.08.02 Skinnerite Cu3SbS3 P 21/c 2/m |
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03.04.08.03 Moeloite! Pb6Sb6S14(S3) P 21221 2 2 2 |
| Strunz Class: |
02.HC.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.H - Sulfosalts of SnS Archetype |
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02.HC -With only Pb |
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02.HC.25 Moeloite! Pb6Sb6S14(S3) P 21221 2 2 2 |
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Other Moeloite Information
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| References: |
NAME( AmMin, Vol 88, p 477) PHYS. PROP.(AmMin, Vol 88, p 477) OPTIC PROP.(AmMin, Vol 88, p 477) |
| 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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Print or Cut-and-Paste your Moeloite Specimen Label here :
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Moeloite
Pb6Sb6S14(S3)
Dana No: 03.04.08.03 Strunz No: 02.HC.25
Locality:
Notes:
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