Rtutí bohatý tetraedrit z Jedové hory u Neřežína a jeho doprovodné minerály

Pages 56-60
Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze | 2008/16/1

In gangue minerals samples from the historical iron and mercury deposit of Jedová hora Hill (formerly Giftberg), an exceptionally mercury rich macroscopic tetrahedrite was found. The average content of mercury detected in this tetrahedrite was 18.26 wt. % (17.52 - 18.73) ~ 1.73 (1.65 - 1.78) apfu. This percentage represents one of the highest content of mercury ever found in tetrahedrites. An empirical formula for this tetrahedrite was derived as follows: Cu6.00[Cu4.07(Hg1.73Fe0.07Zn0.08)Σ1.88]Σ5.95(Sb3.98As0.07)Σ4.05S13.08. This tetrahedrite represents a relatively pure end member of the tetrahedrite series with the majority presence of IIICu,IV(Cu, Hg), Sb and S at individual positions. The sekond (tetrahedral) position, in general referred to as the position B+C (Moëlo et al. 2008), is predominately occupied by copper (B = 4.07 apfu) and mercury (C = 1.73 apfu). The examined Hg-tetrahedrite from Jedová hora potentially represents a new mineral species, the chemical composition of which is close to the ideal theoretical formula IIICu6IV[Cu4Hg2]Sb4S13.

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