Definition of moganite in US English:
moganite
noun
Mineralogy
A microcrystalline form of monoclinic silica.
Origin
1980s. From German Moganit from the name of the Mogan formation on Gran Canaria, where this form of silica was first found + -it.
Pronunciation
moganite
/ˈmɒɡənʌɪt/