Marrucciite
Marrucciite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Hg₃Pb₁₆Sb₁₈S₄₆.
It crystallizes in the monoclinic crystal system (space group C2/m).
Key properties: Mohs hardness 2; specific gravity 6; Dark gray with a very weak reddish tint streak; Metallic luster.
IMA symbol Mru, IMA status: approved, named in 2006.
Found in a hydrothermal assemblage, within small calcite veinlets crosscutting dolomitic lenses interstratified in a Ba-Fe deposit (Buca Della Vena).
It is found associated with Zinkenite, scainiite, chalcostibite, cinnabar or bournonite, boulangerite (Zenderling).
The mineral was named to honor mineral collector Angelo Marrucci (1956-2003), for his contributions to the mineralogy of Tuscany.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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