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Mineralati

Minerals

Lópezite

lópezite

K2Cr2O7

Lópezite: Mineral information, data and localities.

Lópezite: Mineral information, data and localities. — via www.mindat.org · Source

Overview

Lópezite is a rare, red, and carcinogenic chromate mineral with chemical formula: K2Cr2O7. It crystallizes in the triclinic crystal system. It occurs as rare vug fillings in nitrate ores in association with tarapacáite (K2CrO4), dietzeite and ulexite in the Chilean Atacama and is reported from the Bushveld igneous complex of South Africa. Lópezite was first described in 1937 for an occurrence in Iquique Province, Chile and named after Chilean mining engineer Emiliano López Saa (1871–1959). Most commercially available lópezite is artificially produced. Synthetic varieties also exhibit monoclinic crystals.

Identification characteristics

  • Mohs hardness 2.5

Scientific references

  1. Lópezite — Wikidata. https://www.wikidata.org/wiki/Q2000743 Link
  2. Lópezite — Wikipedia. https://en.wikipedia.org/wiki/L%C3%B3pezite Link