Moschellandsbergite Locality: Carolina Mine, Landsberg Mt. (Moschellandsberg Mt.), Obermoschel , Rhineland-Palatinate , Germany ( Locality at mindat.org ) From the John Saul collection, a superb floater crystal of exceptional quality of Moschellandsbergite , small but perfect and complete all around. Comes with xerox of the above label which was with the two specimens together. 0.4 x 0.4 x 0.4 cm — Photo: Robert M. Lavinsky · CC BY-SA 3.0
Moschellandsbergite
A silver-white mercury-silver amalgam mineral described in 1938 from Germany's Moschellandsberg.
Intro adapted from Wikipedia (CC BY-SA).
Moschellandsbergite is an IMA-recognized mineral species in the native element class, with the chemical formula Ag₂Hg₃.
It crystallizes in the cubic crystal system (space group I23).
Key properties: Mohs hardness 3.5; specific gravity 13.48; Bright metallic. R: (400) 73.5, (420) 74.6, (440) 75.7, (460) 76.9, (480) 78.2, (500) 79.5, (520) 80.7, (540) 81.7 luster.
IMA symbol Mlb, grandfathered status — known before the IMA’s founding, named in 1938.
Probably of low-temperature hydrothermal origin.
It is found associated with Metacinnabar, cinnabar, mercurian silver, tetrahedrite–tennantite, pyrite, sphalerite, chalcopyrite.
The name is derived from the locality at Landsberg, near Obermoschel, Germany.