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Mineralati

Minerals

Bartelkeite

bartelkeite

PbFeGe(Ge2O7)(OH)2·H2O

Bartelkeite: Mineral information, data and localities.

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

Overview

Bartelkeite is an exceptionally rare mineral, one of scarce natural germanium compounds. The formula was originally assumed to be PbFeGe3O8, bartelkeite was later shown to be isostructural with a high-pressure form of the mineral lawsonite. Thus, its correct formula is PbFeGe(Ge2O7)(OH)2•H2O. Bartelkeite and mathewrogersite are minerals with essential (dominant) lead, iron and germanium. Both come from Tsumeb, Namibia - a world's "capital" of germanium minerals.

Identification characteristics

  • Mohs hardness 4

Scientific references

  1. Bartelkeite — Wikidata. https://www.wikidata.org/wiki/Q809232 Link
  2. Bartelkeite — Wikipedia. https://en.wikipedia.org/wiki/Bartelkeite Link