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ATHENA

MINERALOGY

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Mineral: HALLOYSITE-7Å = HALLOYSITE
Formula: Al2Si2O5(OH)4
Crystal System: Monoclinic
Group: Kaolinite-Serpentine group. Kaolinite subgroup
References: AM 40 (1955), 1110; HB2/1 (1995); AM 98 (2013), 1008; Clay Minerals 53 (2018), 691; EJM 34 (2022), 467; MM 87/2 (2023), 225
Type Locality: Angleure, Liège, Belgium

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