Plumbopalladinite

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Plumbopalladinite
Plumbopalladinite-21589.jpg
Plumbopalladinite, found in: Rustenburg Mine, South Africa
General and classification
other names

IMA 1970-020

chemical formula Pd 3 Pb 2
Mineral class
(and possibly department) 		Elements - metals and intermetallic alloys
System no. to Strunz
and to Dana 		1.AG.25 ( 8th edition : I / A.16)
02/01/11/01
Crystallographic Data
Crystal system hexagonal
Crystal class ; symbol 6 / mmm
Space group P 6 3 mc
Lattice parameters a  = 4.47  Å ; c  = 5.72 Å Please complete the source as an individual reference!
Formula units Z  = 1 Please complete the source as an individual reference!
Physical Properties
Mohs hardness 5
Density (g / cm 3 ) 8.32
Cleavage Please complete!
colour white with a light pink hue
Line color Please complete!
transparency opaque
shine metallic

Plumbopalladinite is a very rare mineral from the mineral class of the elements, more precisely metals and intermetallic compounds . It crystallizes in the hexagonal crystal system with the chemical composition Pd 3 Pb 2 and forms grains up to 0.7 mm in size, which combine to form small aggregates.

Etymology and history

Plumbopalladinite was first found in 1970 by AD Genkin, TL Evstigneewa, LN Vyalsow, IP Laputina and NW Tronewa in the type locality , the Mayak mine near Norilsk in Siberia ( Russia ). It is named after its composition, the elements palladium and lead .

classification

In the Strunz system , plumbopalladinite is counted among the metals and intermetallic compounds, a subgroup of the elements. After the 8th edition, it forms a group together with Atokit , Niggliit , Palarstanid , Rustenburgit , Stannopalladinit and Zvyagintsevit . In the 9th edition it forms a subgroup of PGE (platinum group elements) metal alloys with stannopalladinite.

In the Dana system , it forms a separate subgroup of the metallic elements and alloys with platinum metals .

Education and Locations

Plumbopalladinite is formed in sulfidic copper-nickel ores. It is associated with cubanite , talnakhite , polarite , stannopalladinite, silver , sphalerite and galena .

In addition to the type locality, only one other find is known from Stillwater County in the US state of Montana .

Crystal structure

Plumbopalladinite crystallizes in the hexagonal crystal system in the space group P6 3 mc with the lattice parameters a = 4.47  Å and c = 5.72 Å and one formula unit per unit cell .

See also

Individual evidence

  1. ^ Minerals Arranged by the New Dana Classification.

literature

  • Plumbopalladinite. In: Anthony et al.: Handbook of Mineralogy. 1990, 1, 101 ( PDF ).
  • AD Genkin, TL Evstigneeva, LN Vyal'sov, IP Laputina and NV Troneva: Plumbopalladinite, a new mineral from copper-nickel ores. In: Geologiya Rudnykh Mestorozhdeniy. 1970, 5, 63-68 (Russian). Abstract in: American Mineralogist. 1971, 65, p. 1121 (English, PDF ).

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