Moëloite
A valid IMA mineral species
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About Moëloite
Formula:
Pb6Sb6S14(S3)
Colour:
Greyish-black
Lustre:
Metallic
Specific Gravity:
5.86 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Dr. Yves Moëlo, Institut des Matériaux, CNRS - Université de Nantes, France, a specialist of lead sulfosalt mineralogy. He first prepared and studied this compound.
A sulphosalt with a trisulphide anion.
Unique Identifiers
Mindat ID:
27689
Long-form identifier:
mindat:1:1:27689:4
GUID
(UUID V4):
(UUID V4):
2b3d2354-8706-43d9-b01f-2d74f2b808ca
IMA Classification of Moëloite
Approved
IMA Formula:
Pb6Sb6S14(S)3
Approval year:
1998
First published:
2002
Type description reference:
Orlandi, Paolo, Meerschaut, Alain, Palvadeau, Pierre, Merlino, Stefano (2002) Lead-antimony sulfosalts from Tuscany (Italy) V. Definition and crystal structure of moëloite, Pb6Sb6S14(S3), a new mineral from the Ceragiola marble quarry. European Journal of Mineralogy, 14 (3) 599-606 doi:10.1127/0935-1221/2002/0014-0599
Classification of Moëloite
2.HC.25
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Moë | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Moëloite
Metallic
Transparency:
Opaque
Colour:
Greyish-black
Comment:
Brownish-red very thin fibers
Streak:
Brown
Tenacity:
Flexible
Density:
5.86 g/cm3 (Calculated)
Optical Data of Moëloite
Anisotropism:
moderate
Reflectivity:
Wavelength | R1 | R2 | imR1 | imR2 |
---|---|---|---|---|
400nm | 37.0% | 40.0% | 26.7% | 29.3% |
420nm | 38.8% | 40.7% | 25.7% | 27.8% |
440nm | 39.2% | 40.8% | 25.3% | 27.6% |
460nm | 37.7% | 40.0% | 24.6% | 27.1% |
470nm | 37.8% | 40.0% | 24.2% | 26.6% |
480nm | 38.2% | 40.0% | 24.3% | 26.6% |
500nm | 38.2% | 40.1% | 23.6% | 25.9% |
520nm | 37.8% | 39.5% | 23.4% | 25.4% |
540nm | 37.1% | 39.2% | 22.8% | 25.0% |
546nm | 36.5% | 38.8% | 22.8% | 24.9% |
560nm | 36.8% | 38.5% | 22.2% | 24.4% |
580nm | 36.5% | 38.7% | 21.6% | 23.7% |
589nm | 36.7% | 38.6% | 21.4% | 23.4% |
600nm | 36.4% | 38.1% | 21.4% | 23.3% |
620nm | 34.5% | 36.9% | 21.0% | 22.2% |
640nm | 34.5% | 36.1% | 20.2% | 21.6% |
650nm | 34.7% | 36.5% | 20.1% | 21.2% |
660nm | 34.6% | 36.1% | 19.7% | 20.7% |
680nm | 33.6% | 34.6% | 19.6% | 20.2% |
700nm | 32.1% | 33.2% | 18.8% | 19.8% |
720nm | 32.2% | 33.0% | 18.1% | 19.2% |
740nm | 31.3% | 33.1% | 17.7% | 18.3% |
760nm | 29.6% | 31.3% | 17.0% | 17.6% |
780nm | 29.4% | 30.8% | 16.9% | 18.0% |
800nm | 27.5% | 30.8% | 17.0% | 17.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 40.8%.
R1 shown in black, R2 shown in red, imR1 shown in green, imR2 shown in blue
Colour in reflected light:
white
Pleochroism:
Non-pleochroic
Chemistry of Moëloite
Mindat Formula:
Pb6Sb6S14(S3)
Elements listed:
Crystallography of Moëloite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 2
Cell Parameters:
a = 15.328 Å, b = 4.04 Å, c = 23.054 Å
Ratio:
a:b:c = 3.794 : 1 : 5.706
Unit Cell V:
1427.6 ų
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.724 Å | (55) |
3.427 Å | (100) |
3.047 Å | (85) |
2.844 Å | (58) |
2.779 Å | (70) |
2.753 Å | (45) |
2.017 Å | (80) |
1.733 Å | (50) |
Comments:
Format: d/Å I
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Moëloite
General Appearance of Type Material:
Very thin needles and soft plumose aggregates of flexible thin fibres.
Place of Conservation of Type Material:
Museo di Storia Naturale e del Territorio, Università di Pisa (Via Roma 103, I-56011 Calci (PI), Italy).
Geological Setting of Type Material:
Marble quarry
Associated Minerals at Type Locality:
Reference:
Orlandi, P., Meerschaut, A., Palvadeau, P., Merlino, S. (2002) Lead-antimony sulfosalts from Tuscany (Italy). V. Definition and crystal structure of moëloite, Pb6Sb6S14(S3), a new mineral from Ceragiola marble quarry. European Journal of Mineralogy: 14: 599-606.
Synonyms of Moëloite
Other Language Names for Moëloite
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Moëloite associated with Pyrite | FeS2 |
1 photo of Moëloite associated with Sphalerite | ZnS |
Related Minerals - Strunz-mindat Grouping
2.HC. | Bernarlottiite | Pb6(As5Sb3)S18 |
2.HC.05b | Argentobaumhauerite | Ag1.5Pb22As33.5S72 |
2.HC.05b | Baumhauerite | Pb12As16S36 |
2.HC.05d | Dufrénoysite | Pb2As2S5 |
2.HC.05a | Guettardite | Pb8(Sb0.56As0.44)16S32 |
2.HC.05c | Liveingite | Pb9As13S28 |
2.HC.05f | Parapierrotite | TlSb5S8 |
2.HC.05f | Pierrotite | Tl2(Sb,As)10S16 |
2.HC.05d | Rathite | Ag2Pb12-xTlx/2As18+x/2S40 |
2.HC.05a | Sartorite | PbAs2S4 |
2.HC.05a | Twinnite | Pb0.8Tl0.1Sb1.3As0.8S4 |
2.HC.05d | Veenite | Pb16Sb9-xAs7+xS40, x ~ 0-0.5 |
2.HC.05g | Marumoite | Pb32As40S92 |
2.HC.05d | Rathite-IV | PbAs2S4 |
2.HC.05f | Philrothite | TlAs3S5 |
2.HC.05h | Polloneite | AgPb46As26Sb23S120 |
2.HC.05e | Heptasartorite | Tl7Pb22As55S108 |
2.HC.05e | Hendekasartorite | Tl2Pb48As82S172 |
2.HC.05e | Écrinsite | AgTl3Pb4As11Sb9S36 |
2.HC.05b | Baumhauerite II | |
2.HC.05c | Argentoliveingite | Ag3+xPb36-2xAs51+xS112 |
2.HC.05e | Incomsartorite | Tl6Pb144As246S516 |
2.HC.05d | Argentodufrénoysite | Ag3Pb26As35S80 |
2.HC.05a | Hyršlite | Pb8As10Sb6S32 |
2.HC.05e | Dekatriasartorite | TlPb58As97S204 |
2.HC.10a | Fülöppite | Pb3Sb8S15 |
2.HC.10c | Heteromorphite | Pb7Sb8S19 |
2.HC.10b | Plagionite | Pb5Sb8S17 |
2.HC.10d | Rayite | Pb8(Ag,Tl)2Sb8S21 |
2.HC.10d | Semseyite | Pb9Sb8S21 |
2.HC.15 | Boulangerite | Pb5Sb4S11 |
2.HC.15 | Falkmanite | Pb3Sb2S6 |
2.HC.20 | Robinsonite | Pb4Sb6S13 |
2.HC.30 | Dadsonite | Pb23Sb25S60Cl |
2.HC.35 | Owyheeite | Ag3Pb10Sb11S28 |
2.HC.35 | Zoubekite | AgPb4Sb4S10 |
2.HC.40 | Parasterryite | Ag4Pb20Sb14As10S58 |
2.HC.50 | Lopatkaite | Pb5Sb3AsS11 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Moëloite
mindat.org URL:
https://www.mindat.org/min-27689.html
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External Links:
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References for Moëloite
Reference List:
Orlandi, Paolo, Meerschaut, Alain, Palvadeau, Pierre, Merlino, Stefano (2002) Lead-antimony sulfosalts from Tuscany (Italy) V. Definition and crystal structure of moëloite, Pb6Sb6S14(S3), a new mineral from the Ceragiola marble quarry. European Journal of Mineralogy, 14 (3) 599-606 doi:10.1127/0935-1221/2002/0014-0599
Localities for Moëloite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Italy (TL) | |
| Orlandi, Paolo, Meerschaut, Alain, Palvadeau, Pierre, Merlino, Stefano (2002) Lead-antimony sulfosalts from Tuscany (Italy) V. Definition and crystal structure of moëloite, Pb6Sb6S14(S3), a new mineral from the Ceragiola marble quarry. European Journal of Mineralogy, 14 (3) 599-606 doi:10.1127/0935-1221/2002/0014-0599 |
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Switzerland | |
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Madielle quarries, Madielle quarrying basin, Massa, Massa-Carrara Province, Tuscany, Italy