RockVault
Galena

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

cubiccommonSulfides

Galena

PbS

This specimen displays well-formed, lustrous, metallic lead-gray cubic crystals, characteristic of galena. The crystals exhibit sharp edges and faces, reflecting light strongly.

Galena Physical Properties

Mohs Hardness

2.5

Crystal System

cubic

Luster

metallic

Streak Color

gray to lead gray

Cleavage

perfect cubic on {001}

Fracture

subconchoidal to uneven

Specific Gravity

7.5

Colors

lead-gray, silvery-gray

Transparency

opaque

Type Locality

Neudorf, Harzgerode, Harz Mts, Saxony-Anhalt, Germany

Mineral Group

Sulfides

Uses

primary ore of lead, source of silver, collector's item, semiconductor in early radio receivers

Associated Minerals

sphalerite, pyrite, chalcopyrite, quartz, calcite, dolomite

Rarity

common

Geological Context

Galena typically forms in hydrothermal veins, often associated with other sulfide minerals, and can also be found in contact metamorphic deposits and sedimentary rocks. It is a primary ore mineral for lead and often contains significant amounts of silver.