Tennantite-(Hg), Cu₆(Cu₄Hg₂)As₄S₁₃, a new tetrahedrite-group mineral from the Lengenbach quarry, Binn, Switzerland

Abstract

This is a 'preproof' accepted article for Mineralogical Magazine. This version may be subject to change during the production process.

Tennantite-(Ni), Cu6(Cu4Ni2)As4S13, from Luobusa ophiolite, Tibet, China: a new Ni member of the tetrahedrite group

“…Several cycles of isotropic refinement converged to R 1 = 0.1021, confirming the correctness of the structural model. The M(2) site, which had a rather high U eq value, was split into two position, M(2A) and M(2B) separated by 1.22(2) Å, in agreement with previous studies (Andreasen et al, 2008;Makovicky et al, 2005;Welch et al, 2018;Biagioni et al, 2021Biagioni et al, , 2022aBiagioni et al, , 2022b. Further anisotropic refinement with free site-occupancy factors gave 0.687(12) and 0.157(6) for M(2A) and M(2B) of the 12e and 24g positions, respectively.…”

Tennantite-(Cu), Cu12As4S13, from Layo, Arequipa Department, Peru: a new addition to the tetrahedrite-group minerals

“…3.Reflectance curves for tennantite-(Cu) from the Layo deposit, compared with published data for other tennantite-series minerals. (1) Layo, Arequipa Department, Peru; (2) tennantite-(Fe) from Wheal Jewel, Cornwall, England (Criddle and Stanley, 1993; p. 557); (3) tennantite-(Zn) from Tsumeb, Otavi, Namibia (Criddle and Stanley, 1993; p. 561); (4) Bi-bearing tennantite-(Zn) from the Bicknoller Quarry, Cornwall, England (Criddle and Stanley, 1993; p. 558); (5) Hg-bearing tennantite-(Fe) from the Gortdrum mine, Ireland (Criddle and Stanley, 1993; p. 559); (6) Pb-bearing tennantite-(Zn) from the Sark's Hope mine, Sark, Channel Islands (Criddle and Stanley, 1993; p. 560); and (7) tennantite-(Hg) from Lengenbach, Switzerland (Biagioni et al , 2021). …”

“…Iron and Zn are the most common divalent elements occurring in tennantite-series minerals; moreover, since the publication of the nomenclature of tetrahedrite-group minerals (Biagioni et al , 2020), three other species belonging to the tennantite series have been approved by the International Mineralogical Association – Commission on New Minerals, Nomenclature and Classification (IMA-CNMNC), i.e. tennantite-(Hg) (Biagioni et al , 2021), tennantite-(Ni) (Wang et al , 2021), and tennantite-(Cd) (Biagioni et al , 2022). Other potential end-member compositions are known in the literature.…”

Tennantite-(Cd), Cu6(Cu4Cd2)As4S13, from the Berenguela mining district, Bolivia: the first Cd-member of the tetrahedrite group

“…Currently, several members of the tennantite series have been reported: tennantite-(Fe), tennantite-(Zn), tennantite-(Hg), tennantite-(Cu), and tennantite-(Ni) (Biagioni et al, 2020a(Biagioni et al, , 2021(Biagioni et al, , 2022Wang et al, 2021). Tennantite-(Cd) is another addition to this series and its occurrence is in keeping with the similar crystal-chemical behaviour of Zn and Cd.…”

“…3.Reflectance curve for tennantite-(Cd). For the sake of comparison, the reflectance curves of other members of the tennantite series are shown: tennantite-(Fe), Wheal Jewel, Gwennap, Cornwall, U.K. (Criddle and Stanley, 1993); tennantite-(Zn), Tsumeb, Namibia (Criddle and Stanley, 1993); tennantite-(Hg), Lengenbach, Binn Valley, Switzerland (Biagioni et al , 2021). …”