Mineral Information and Data:

Galena
PbS [CNMNC approved formula]

Named from the Latin word galena, given to lead ore or the dross from melted lead.

IMA status : Valid species (Pre-IMA Ancient) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
02.08.01.01  
  (02) Sulfides - Including Selenides and Tellurides
  (02.08) where Am Bn Xp, with (m+n):p=1:1
  (02.08.01) Galena Group (Isometric: Fm3m)
  
Nickel-Strunz
(10th edition) :
02.CD.10
  (02) Sulfides
  (02.C) Metal Sulfides, M:S = 1:1 (and similar)
  (02.CD) With Sn, Pb, Hg, etc.
  
Crystal system: Cubic System
Point group (H-M): m3m (or 4/m 3 2/m) — hexoctahedral
Unit cell: a = 5.936 วบ
Crystal Habit: Crystals cubic, octahedral, or cuboctahedral, or tabular, skeletal, or reticulated; massive, cleavable; granular; fibrous
Twinning: On {111}, penetration or contact; on {114}, lamellar
  
Color: Lead-gray; in polished section, white
Diaphaneity: Opaque
Luster: Metallic
Hardness (Mohs): 2.5
Measured Density: 7.58 g/cm3
Cleavage: 1; {001} perfect
Tenacity: Brittle
Fracture: Sub-conchoidal
Streak: Lead-grey
  
Geologic Setting: In many different types of environments. In hydrothermal veins, formed under a wide range of temperatures; in contact metamorphic deposits, in pegmatites, rarely; limestones and dolostones are common host rocks.
Mineral Association: Sphalerite, marcasite, pyrite, chalcopyrite, tetrahedrite, silver minerals, siderite,
calcite, dolomite, barite, quartz, many other hydrothermal minerals
Ore deposits: The primary ore mineral for lead.
  
Synonyms/varieties: Galenite, bleiglanz
Other Properties: BioMineral.
Comments: Forms a series with clausthalite

 

Galena
Origin: Reocin, Torrelavega, Northern Spain
Picture height: 19 mm
Sample owner: H. van Dennebroek
Photo : Pieter Stemvers, Leusden, Netherlands

 

Galena
Origin: Double Rainbow mine, Lawrence Co., South Dakota, USA
Sample size: 5 cm
Photo: Tom Loomis

 

Galena
(zoom-in of above)

 

Galena
Origin: Joplin, Missouri, United States
Sample size: 9 x 6 x 4 cm
Photo: Tom Loomis

 

Galena
(zoom-in of above)

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