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Mineralati

Minerals

Ferri-Obertiite

ferri-obertiite

Na(Na2)(Mg3Fe³⁺Ti)(Si8O22)O2

Ferri-obertiite: Mineral information, data and localities.

Ferri-obertiite: Mineral information, data and localities. — via www.mindat.org · Source

Overview

Ferri-obertiite is an amphibole group mineral that was formally approved by the International Mineralogical Association in 2015. It has the chemical formula Na(Na2)(Mg3Fe3+Ti)(Si8O22)O2. Ferri-obertiite is highly sodic and is especially characterized in the presence of oxygen instead of a hydroxy group or fluorine at the W site, which compensates for the relatively high positive charge due to the dominance of ferric iron and presence of titanium. Similar to many other amphiboles, ferri-obertiite is monoclinic with space group C2/m. The name honors professor Roberta Oberti of the University of Pavia, Italy.

Scientific references

  1. Ferri-Obertiite — Wikidata. https://www.wikidata.org/wiki/Q23005427 Link
  2. Ferri-Obertiite — Wikipedia. https://en.wikipedia.org/wiki/Ferri-obertiite Link