Leadamalgam
Leadamalgam is an IMA-recognized mineral species in the native element class, with the chemical formula HgPb₂.
It crystallizes in the tetragonal crystal system (space group I4/mmm).
Key properties: Mohs hardness 1.6; specific gravity 11.96; Strong metallic luster.
IMA symbol Lam, IMA status: approved, named in 1981.
Found in heavy concentrates of crushed ores from a platinum-bearing Cu–Ni sulfide deposit.
It is found associated with Gersdorffite, pyrite, chalcopyrite, violarite, millerite, galena, stibnite, argentian gold, niggliite, sperrylite, iridosmine, platinum, merenskyite.
The name refers to the composition, by analogy to mercury–silver amalgam.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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