Moschellandsbergite: Properties and Occurrences

Moschellandsbergite is a rare isometric mineral made up of a silver-white amalgam of mercury and silver with the chemical makeup Ag2Hg3. It is a mineral consisting of a natural alloy or amalgam of silver and mercury. These minerals are very rare matrix moschellandsbergite from a famous and important find in the mid-1800s.

It was first described in 1938 and named after Moschellandsberg Mountain near Obermoschel, Rhineland-Palatinate, Germany.

General Information

  • Category: Metals and intermetallic alloys
  • Formula (repeating unit): silver amalgam, Ag2Hg3
  • Crystal system: Isometric
  • Crystal class: Tetartoidal (23) (same H-M symbol)
  • Color: white, tarnishes grey.

Moschellandsbergite – a rare isometric mineral

Properties

Moschellandsbergite appears as sub-mm crystals of a greyish-green which form rich druses coating much of a light Goethite vuggy matrix. It is a rare isometric mineral made up of a silver-white amalgam of mercury and silver.

  • Cleavage: brittle
  • Mohs scale hardness: 3.5
  • Luster: metallic
  • Specific gravity: 13.48
  • Transparency: Opaque
  • Streak: silver
  • Tenacity: Brittle
  • Cleavage: Distinct/Good

Occurrences – Probably of low-temperature hydrothermal origin.

It is considered a low-temperature hydrothermal mineral that occurs with metacinnabar, cinnabar, mercurian silver, tetrahedrite–tennantite, pyrite, sphalerite, and chalcopyrite.

Association: Metacinnabar, cinnabar, mercurian silver, tetrahedrite–tennantite, pyrite, sphalerite, chalcopyrite.