粗粒 そりゅう玄武 げんぶ いわじゃありません
so ryūgembuiwaja arimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 粗粒玄武岩

1. Not coarse-grained basalt.; It is not coarse-grained basalt.

Negative
Polite
Terminal Form
Geology