Black microcrystal aggregates of the very rare sulphide mineral garavellite from the type locality in Frigido mine, Massa-Carrara in a brown siderite matrix. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Garavellite
Garavellite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula FeSbBiS₄.
It crystallizes in the orthorhombic crystal system (space group Pnam). It is a member of the Berthierite structural group.
Key properties: specific gravity 5.64; Metallic luster.
IMA symbol Grv, IMA status: approved, named in 1978.
Found in a hydrothermal copper deposit with disseminated chalcopyrite in siderite gangue.
It is found associated with Chalcopyrite, tetrahedrite, pyrrhotite, pyrite, marcasite, galena, sphalerite, meneghinite, ullmannite, pentlandite, vaesite, bismuthinite, chalcanthite.
In honor of Professor Carlo L. Garavelli (1929–), Italian mineralogist, University of Bari, Bari, Italy.