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Mineralati

Minerals

Cumengeite

cumengeite

Pb21Cu20Cl42(OH)40·6H2O

Cumengeite, Boleite - MD-22519 - Amelia Mine - Mexico Mineral Specimen

Cumengeite, Boleite - MD-22519 - Amelia Mine - Mexico Mineral Specimen — via www.irocks.com · Source

Overview

Cumengeite, also known as cumengite, is a secondary mineral that was named after mining engineer Bernard Louis Philippe Édouard Cumenge, who found the first specimens. It is easily confused with diaboleite. It is a valid species that was first described prior to 1959, and is grandfathered now, but it has been a valid species since 1893, since pre-IMA. It is the hydroxychloride of lead and copper.

Identification characteristics

  • Mohs hardness 2.5

Scientific references

  1. Cumengeite — Wikidata. https://www.wikidata.org/wiki/Q1143781 Link
  2. Cumengeite — Wikipedia. https://en.wikipedia.org/wiki/Cumengeite Link