newtonite
/ˈnjuːtənʌɪt/ /ˈnjuːt(ə)nʌɪt/Mineralogy. Now historical
noun
= alunite.
- The mineral was originally thought to be a silicate of aluminium resembling kaolinite..
Origin
Late 19th century. From the name of Newton County, Arkansas, where the mineral was discovered in 1891 + -ite.