광물 데이터베이스와 크리스탈 테라피광물HydrohalloysiteHelix84·CC BY 2.0·WikimediaHydrohalloysiteAl2Si2O5(OH)4·2H2O IMA discredited구성Composizione (% in peso)OSiAlOOxygen59.8%SiSilicon19.1%AlAluminium18.3%HHydrogen2.7%어원명명 유래 Jean Baptiste Julien d'Omalius d'Halloy.