allophaneyoudaoicibaDictYouDict[allophane 词源字典]
"An amorphous clay mineral, typically pale blue, consisting essentially of hydrated aluminium silicate", Early 19th cent.; earliest use found in Annals of Philosophy. From allo- + -phane, after German Allophan, itself apparently after Byzantine Greek ἀλλοϕανής, the mineral being so named on account of its unusual appearance.[allophane etymology, allophane origin, 英语词源]