Yves Moëlo
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View article: Ginelfite, Ag<sub>2</sub>(Ag<sub>0.5</sub>Fe<sub>0.5</sub>)TlPb<sub>24.5</sub>(Sb,As)<sub>32.5</sub>S<sub>75.5</sub>, a new boxwork sulfosalt from Jas Roux, France: occurrence and crystal structure
Ginelfite, Ag<sub>2</sub>(Ag<sub>0.5</sub>Fe<sub>0.5</sub>)TlPb<sub>24.5</sub>(Sb,As)<sub>32.5</sub>S<sub>75.5</sub>, a new boxwork sulfosalt from Jas Roux, France: occurrence and crystal structure Open
Ginelfite, Ag2(Ag0.5Fe0.5)TlPb24.5(Sb,As)32.5S75.5 (Z=2), was discovered in the hydrothermal deposit of Jas Roux, Hautes-Alpes, France, as dark grey, metallic, acicular crystals up to 0.5 mm long, associated with sphalerite and lopatkaite …
View article: Crystal structure of Pb-bearing watanabeite from Pefka, Greece
Crystal structure of Pb-bearing watanabeite from Pefka, Greece Open
Watanabeite from the Pefka epithermal deposit, northeastern Greece, was examined using single-crystal X-ray diffraction and electron microprobe analysis. The empirical formula of watanabeite is Cu 3.93 Fe 0.10 Ag 0.01 Pb 0.23 As 1.55 Sb 0.…
View article: Pseudo-cubic trigonal pyrite from the Madan Pb–Zn ore field (Rhodope Massif, Bulgaria): morphology and twinning
Pseudo-cubic trigonal pyrite from the Madan Pb–Zn ore field (Rhodope Massif, Bulgaria): morphology and twinning Open
A new occurrence of pyrite crystals with rhombohedral habit, up to several centimeters in length, is described from the Madan Pb–Zn ore field (Rhodope Massif, south Bulgaria), where it constitutes a late pyrite generation. As observed in t…
View article: Pyrite contact twins
Pyrite contact twins Open
Two examples of contact twins in pyrite from Peru are described. The first one, from Pasto Bueno ore deposit, shows the pyritohedron {120} as principal form, accompanied by the {111} octahedron and {100} cube as secondary forms, giving a l…
View article: The bond valence model as a prospective approach: examination of the crystal structures of copper chalcogenides with Cu bond valence excess
The bond valence model as a prospective approach: examination of the crystal structures of copper chalcogenides with Cu bond valence excess Open
Bond valence analysis has been applied to various copper chalcogenides with copper valence excess, i.e. where the formal valence of copper exceeds 1. This approach always reveals a copper bond valence excess relative to the unit value, cor…
View article: Tennantite-(Cu), Cu<sub>12</sub>As<sub>4</sub>S<sub>13</sub>, from Layo, Arequipa Department, Peru: a new addition to the tetrahedrite-group minerals
Tennantite-(Cu), Cu<sub>12</sub>As<sub>4</sub>S<sub>13</sub>, from Layo, Arequipa Department, Peru: a new addition to the tetrahedrite-group minerals Open
Tennantite-(Cu), Cu 12 As 4 S 13 , was approved as a new mineral species from the Layo epithermal deposit, Castilla Province, Arequipa Department, Peru, where it occurs as black metallic anhedral grains, up to 0.1 mm across, replacing enar…
View article: Tennantite-(Hg), Cu<sub>6</sub>(Cu<sub>4</sub>Hg<sub>2</sub>)As<sub>4</sub>S<sub>13</sub>, a new tetrahedrite-group mineral from the Lengenbach quarry, Binn, Switzerland
Tennantite-(Hg), Cu<sub>6</sub>(Cu<sub>4</sub>Hg<sub>2</sub>)As<sub>4</sub>S<sub>13</sub>, a new tetrahedrite-group mineral from the Lengenbach quarry, Binn, Switzerland Open
Tennantite-(Hg), Cu 6 (Cu 4 Hg 2 )As 4 S 13 , was approved as a new mineral species (IMA2020-063) from the Lengenbach quarry, Imfeld, Binn Valley, Canton Valais, Switzerland. It was identified as an aggregate of black metallic tetrahedral …
View article: Contribution to the crystal chemistry of lead-antimony sulfosalts: systematic Pb-versus-Sb crossed substitution in the plagionite homologous series, Pb&lt;sub&gt;2&lt;i&gt;N&lt;/i&gt; − 1&lt;/sub&gt;(Pb&lt;sub&gt;1 − &lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Sb&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;(Sb&lt;sub&gt;1 − &lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Pb&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;Sb&lt;sub&gt;6&lt;/sub&gt;S&lt;sub&gt;13+2&lt;i&gt;N&lt;/i&gt;&lt;/sub&gt;
Contribution to the crystal chemistry of lead-antimony sulfosalts: systematic Pb-versus-Sb crossed substitution in the plagionite homologous series, Pb<sub>2<i>N</i> − 1</sub>(Pb<sub>1 − <i>x</i></sub>Sb<sub><i>x</i></sub>)<sub>2</sub>(Sb<sub>1 − <i>x</i></sub>Pb<sub><i>x</i></sub>)<sub>2</sub>Sb<sub>6</sub>S<sub>13+2<i>N</i></sub> Open
The plagionite homologous series contains four well-defined members with the general formula Pb1+2NSb8S13+2N: fülöppite (N=1), plagionite (N=2), heteromorphite (N=3), and semseyite (N=4). The crystal structure of several natural and synthe…
View article: Polygenic chamosite from a hydrothermalized oolitic ironstone (Saint-Aubin-des-Châteaux, Armorican Massif, France): crystal chemistry, visible–near-infrared spectroscopy (red variety) and geochemical significance
Polygenic chamosite from a hydrothermalized oolitic ironstone (Saint-Aubin-des-Châteaux, Armorican Massif, France): crystal chemistry, visible–near-infrared spectroscopy (red variety) and geochemical significance Open
Several generations of chamosite, including a red variety, occur in the Ordovician hydrothermalized oolitic ironstone from Saint-Aubin-des-Châteaux (Armorican Massif, France). Their chemical re-examination indicates a low Mg content (0.925…
View article: Structural interpretation of a new twin in staurolite from Coray, Brittany, France
Structural interpretation of a new twin in staurolite from Coray, Brittany, France Open
International audience
View article: CSD 1788071: Experimental Crystal Structure Determination
CSD 1788071: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CCDC 986412: Experimental Crystal Structure Determination
CCDC 986412: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Lead-antimony sulfosalts from Tuscany (Italy). XIX. Crystal chemistry of chovanite from two new occurrences in the Apuan Alps and its 8 Å crystal structure
Lead-antimony sulfosalts from Tuscany (Italy). XIX. Crystal chemistry of chovanite from two new occurrences in the Apuan Alps and its 8 Å crystal structure Open
Two new occurrences of the lead oxy-sulfosalt chovanite have been identified at the Monte Arsiccio and Pollone mines, Apuan Alps, Tuscany, Italy. Chovanite from Monte Arsiccio occurs as black acicular crystals, up to 5 mm long, associated …
View article: Lead-antimony sulfosalts from Tuscany (Italy). XVIII. New data on the crystal-chemistry of boscardinite
Lead-antimony sulfosalts from Tuscany (Italy). XVIII. New data on the crystal-chemistry of boscardinite Open
Boscardinite, ideally TlPb 4 (Sb 7 As 2 ) ∑9 S 18 , has been described recently as a new homeotypic derivative of baumhauerite, found at Monte Arsiccio mine, Apuan Alps, Tuscany, Italy. New findings of boscardinite in different mineral ass…
View article: Lead-antimony sulfosalts from Tuscany (Italy). XVII. Meerschautite, (Ag,Cu)<sub>5.5</sub>Pb<sub>42.4</sub>(Sb,As)<sub>45.1</sub>S<sub>112</sub>O<sub>0.8</sub>, a new expanded derivative of owyheeite from the Pollone mine, Valdicastello Carducci: occurrence and crystal structure
Lead-antimony sulfosalts from Tuscany (Italy). XVII. Meerschautite, (Ag,Cu)<sub>5.5</sub>Pb<sub>42.4</sub>(Sb,As)<sub>45.1</sub>S<sub>112</sub>O<sub>0.8</sub>, a new expanded derivative of owyheeite from the Pollone mine, Valdicastello Carducci: occurrence and crystal structure Open
The new mineral species meerschautite, ideally (Ag,Cu) 5.5 Pb 42.4 (Sb,As) 45.1 S 112 O 0.8 , has been discovered in the baryte + pyrite ± (Pb-Zn-Ag) deposit of the Pollone mine, near Valdicastello Carducci, Apuan Alps, Tuscany, Italy. It …
View article: Lead-Antimony Sulfosalts from Tuscany (Italy). XX. Members of the Jordanite–Geocronite Series from the Pollone Mine, Valdicastello Carducci: Occurrence and Crystal Structures
Lead-Antimony Sulfosalts from Tuscany (Italy). XX. Members of the Jordanite–Geocronite Series from the Pollone Mine, Valdicastello Carducci: Occurrence and Crystal Structures Open
A crystal-chemical study of historical specimens as well as new ones belonging to the jordanite–geocronite series from the Pollone baryte + pyrite ± (Pb-Zn-Ag) ore deposit (Valdicastello Carducci, Apuan Alps, Tuscany, Italy) has been perfo…
View article: Suseinargiuite, (Na0.5Bi0.5)MoO4, the Na-Bi analogue of wulfenite, from Su Seinargiu, Sardinia, Italy
Suseinargiuite, (Na0.5Bi0.5)MoO4, the Na-Bi analogue of wulfenite, from Su Seinargiu, Sardinia, Italy Open
The new mineral species suseinargiuite, (Na0.5Bi0.5)MoO4, has been discovered in the Mo-Bi occurrence of Su Seinargiu, Sarroch, Cagliari, Sardinia, Italy. It occurs as hemispherical aggregates of very small acicular crystals, up to some mi…
View article: CSD 1041398: Experimental Crystal Structure Determination
CSD 1041398: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…