Elongated crystals of rouxelite, bluish, metallic luster and with thick section. It is accompanied by small and thin acicular crystals of robinsonite, red copper color, in the midst of larger crystals of rouxelite. Finding of late 2014. Analyzed by Stefano Magnanelli and Christian Biagioni. Not many specimens were collected. Collected: 2014 Locality: Monte Arsiccio Mine, Apuan Alps, Tuscany, Italy Size: 6.2 × 4.4 × 2.7 cm — Photo: Joan Rosell , from rosellminerals.com · CC BY-SA 4.0
Rouxelite
Rouxelite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Cu₂HgPb₂₂Sb₂₈S₆₄(O,S)₂.
It crystallizes in the monoclinic crystal system (space group C2/m).
Key properties: specific gravity 5.86; Metallic luster.
IMA symbol Rxl, IMA status: approved, named in 2002.
Found in calcite veinlets cutting dolomitic lenses in a barite, pyrite and Fe-oxide deposit.
It is found associated with Bournonite, tetrahedrite, sphalerite (Buca della Vena Fe-Ba deposit); Tl-bearing chovanite, sphalerite, valentinite (Monte Arsiccio mine).
The mineral was named to honor Jean Rouxel (1935-1998), a specialist in solid-state chemistry and member of the French Academy of Science, for his studies of chalcogenides.