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Mineralati

Minerals

Halloysite

halloysite

Al2Si2O5(OH)4

Halloysite Mineral Specimen For Sale

Halloysite Mineral Specimen For Sale — via www.dakotamatrix.com · Source

Overview

Halloysite is an aluminosilicate clay mineral with the empirical formula Al2Si2O5(OH)4. Its main constituents are oxygen (55.78%), silicon (21.76%), aluminium (20.90%), and hydrogen (1.56%). It is a member of the kaolinite group. Halloysite typically forms by hydrothermal alteration of alumino-silicate minerals. It can occur intermixed with dickite, kaolinite, montmorillonite and other clay minerals. X-ray diffraction studies are required for positive identification. It was first described in 1826, and subsequently named after, the Belgian geologist Omalius d'Halloy.

Scientific references

  1. Halloysite — Wikidata. https://www.wikidata.org/wiki/Q1314199 Link
  2. Halloysite — Wikipedia. https://en.wikipedia.org/wiki/Halloysite Link