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About MoëloiteHide

Dr. Yves Moëlo
Specific Gravity:
5.86 (Calculated)
Crystal System:
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.

Classification of MoëloiteHide

Approval Year:
First Published:

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb

Physical Properties of MoëloiteHide

Brownish-red very thin fibers
5.86 g/cm3 (Calculated)

Optical Data of MoëloiteHide

470 nmR1=40.0%R2=26.6%
546 nmR1=38.8%R2=24.9%
589 nmR1=38.6%R2=23.4%
650 nmR1=36.5%R2=21.2%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 40.0%.
R1 shown in black, R2 shown in red
Colour in reflected light:

Chemical Properties of MoëloiteHide

IMA Formula:

Crystallography of MoëloiteHide

Crystal System:
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
a:b:c = 3.794 : 1 : 5.706
Unit Cell V:
1427.6 ų

X-Ray Powder DiffractionHide

Powder Diffraction Data:
3.724 (55)
3.427 (100)
3.047 (85)
2.844 (58)
2.779 (70)
2.753 (45)
2.017 (80)
1.733 (50)
Format: d/Å I (hkl)

Type Occurrence of MoëloiteHide

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).
Associated Minerals at Type Locality:

Synonyms of MoëloiteHide

Other Language Names for MoëloiteHide

Simplified Chinese:穆硫锑铅矿
Traditional Chinese:穆硫銻鉛礦

Common AssociatesHide

Associated Minerals Based on Photo Data:
Pyrite3 photos of Moëloite associated with Pyrite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.HC.05bArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
2.HC.05bBaumhaueritePb12As16S36Tric. 1 : P1
2.HC.05eChabournéiteTl4Pb2(Sb,As)20S34Tric. 1 : P1
2.HC.05dDufrénoysitePb2As2S5Mon. 2 : P21
2.HC.05aGuettarditePbAsSbS4Mon. 2/m : P21/b
2.HC.05fParapierrotiteTlSb5S8Mon. m
2.HC.05fPierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
2.HC.05dRathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
2.HC.05aSartoritePbAs2S4Mon. 2/m : P21/m
2.HC.05aTwinnite Pb0.8Tl0.1Sb1.3As0.8S4Mon. 2/m
2.HC.05dVeenitePb2(Sb,As)2S5Mon. 2 : P21
2.HC.05gMarumoitePb32As40S92Mon. 2 : P21
2.HC.05eDalnegroite(Tl4Pb2)(As12Sb8)S34Tric. 1 : P1
2.HC.10aFülöppitePb3Sb8S15Mon. 2/m : B2/b
2.HC.10cHeteromorphitePb7Sb8S19Mon. 2/m : B2/b
2.HC.10bPlagionitePb5Sb8S17Mon. 2/m
2.HC.10dSemseyitePb9Sb8S21Mon. 2/m : B2/b
2.HC.15BoulangeritePb5Sb4S11Mon. 2/m : P21/b
2.HC.20RobinsonitePb4Sb6S13Mon. 2/m : P21/m
2.HC.30DadsonitePb23Sb25S60ClTric. 1 : P1
2.HC.35OwyheeiteAg3+xPb10-2xSb11+xS28, -0.13 < x > +0.20Mon. 2/m : P21/b
2.HC.40ParasterryiteAg4Pb20Sb14As10S58Mon. 2/m : P21/b

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MoëloiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Moëlo, Y. (1983) Contribution à l’étude des conditions naturelles de formation des sulfures complexes d’antimoine et plomb. Signification métallogénique. B.R.G.M. ed., Orléans, Document 55: 624.
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.
Jambor, J.L., Roberts, A.C. (2003) New mineral names. American Mineralogist: 88: 475-479.
Mandarino, J.A. (2003) New minerals. The Canadian Mineralogist: 41: 803-828.

Internet Links for MoëloiteHide

Localities for MoëloiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy (TL)
  • Tuscany
    • Lucca Province
      • Seravezza
P. Orlandi et al.: Eur. J. Mineral., 14: 599-606 (2002); Orlandi, P. & Criscuolo, A. (2009). Minerali del marmo delle Alpi Apuane. Pacini editore, Pisa, 180 pp.
    • Massa-Carrara Province
Orlandi, P. & Criscuolo, A. (2009). Minerali del marmo delle Alpi Apuane. Pacini editore, Pisa, 180 pp.
        • Colonnata quarrying basin
Morino A., Passarino G. (2016): Minerali nel marmo di Carrara: solfuri e solfosali. Riv. Mineral. Ital., 40, 1 (1-2016), 22-33.
        • Miseglia quarrying basin (Miseglia-Fantiscritti quarrying basin)
Morino A., Passarino G. (2016): Minerali nel marmo di Carrara: solfuri e solfosali. Riv. Mineral. Ital., 40, 1 (1-2016), 22-33.
Favreau, G. (2008). Scoperta di moeloite alle cave di Valbona, Carrara. MICRO (notizie mineralogiche), 2008, 107-110
        • Torano quarrying basin
Matteo Chinellato collection
      • Massa
        • Casette
Orlandi, P. & Bellè, E. (2000): I minerali del marmo del bacino del Frigido, Massa. Comune della Città di Massa, Ed., 144 pp.
Orlandi P., Bellé E., 2000. I minerali del marmo del bacino del Frigido, Massa. Comune della città di Massa; Orlandi, P. & Criscuolo, A. (2009). Minerali del marmo delle Alpi Apuane. Pacini editore, Pisa, 180 pp
  • Wallis (Valais)
    • Sion (Sitten)
      • Granges (Lens)
Ansermet, S., Meisser, N. & Cuchet, S. (2011): Ein Hauch Carrara im Wallis - zur Mineralogie des Steinbruchs La Plâtrière in Lens. Schweizer Strahler 2/2011, 2-17 (in German/French).
Mineral and/or Locality  
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