Anglesite

Part of speech: noun

Definitions

  1. A mineral composed primarily of lead sulfate found as an oxidation product of galena, characterized by its high density and often occurring in well-formed crystals
  2. A naturally occurring crystalline substance mainly consisting of lead sulfate, recognized for its dense, heavy nature and commonly forming through the weathering of lead ore deposits
  3. A heavy mineral formed from lead sulfate as a secondary mineral from galena oxidation, notable for its crystalline structure and use as a lead ore source

Etymology: The mineral known as anglesite derives its name from the locality where it was first identified in a distinct form. Its type locality is the area around the English town of Anglesey, an island off the northwest coast of Wales. The name itself emerged in the early 19th century as mineralogists sought to classify and name new mineral species based on their chemical composition and source of discovery. Anglesite is a lead sulfate mineral, with a chemical formula of PbSO4, and it commonly forms as a secondary mineral through the oxidation of galena, the primary lead ore. The suffix "-ite" is a standard ending in mineralogy used to denote minerals and rocks, tracing back to the Greek "-ites," which often indicated belonging or connection. In this case, the suffix is attached to "Angles," referencing Anglesey, thereby marking the mineral’s geographic roots. The discovery and naming of anglesite fit into a broader 19th-century trend in mineralogy, when the field was becoming more systematic and reliant on chemical analysis rather than just physical properties. The mineral’s identification helped expand understanding of secondary mineral formation processes in oxidized ore deposits, especially those rich in lead. Although anglesite’s name is firmly anchored in a place, it is part of a family of minerals where names often reflect either chemical composition, crystal structure, or locality. This blend of chemical and geographic naming conventions is typical of mineral names, bridging the natural science and human geography that together map the mineral world.

Synonyms: lead sulfate