Mineral Information and Data:

Atheneite
(Pd,Hg)3As [CNMNC approved formula]

Named after the Greek goddess "Pallas Athene," in allusion to its palladium content.

IMA status : Approved Species 1974 (IMA1973-050)
CLASSIFICATION 
Dana
(8th edition) :
02.02.04.01  
  (02) Sulfides - Including Selenides and Tellurides
  (02.02) where Am Bn Xp, with (m+n):p=3:1
  (02.02.04)
  
Nickel-Strunz
(10th edition) :
02.AC.05a
  (02) Sulfides
  (02.A) Simple Sulfides, Selenides, etc
  (02.AC) Alloys of metalloids with PGE
  
Crystal system: Hexagonal System
Point group (H-M): 6/mmm (or 6/m 2/m 2/m) — dihexagonal-dipyramidal
Unit cell: a = 6.798Å, c = 3.483Å
Crystal Habit: As tiny blebs; crystal outlines seldom displayed, grain boundaries being commonly embayed.
  
Color: Gray ; white with bluish tint in reflected light compared to arsenopalladinite.
Diaphaneity: Opaque
Luster: Metallic
Hardness (Mohs): 5
Measured Density: 10.2 g/cm3
  
Geologic Setting: In concentrates from gold washings.
Mineral Association: Arsenopalladinite, palladseite, isomertieite, hematite (Itabira, Brazil).
  

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