Galena

PbS - Mohs Hardness: 2 1/2.  Galena is very easy to identify. Freshly broken pieces exhibit perfect cleavage in three directions that intersect at 90 degrees. It has a distinct silver color and a bright metallic luster.
Abstract/Description: PbS - Mohs Hardness: 2 1/2. Galena is very easy to identify. Freshly broken pieces exhibit perfect cleavage in three directions that intersect at 90 degrees. It has a distinct silver color and a bright metallic luster.
Subject(s): Northern Michigan, United States
environmental sciences