粗粒 そりゅう玄武 げんぶ いわじゃなかったです
so ryūgembuiwajanakattadesu

Noun
Desu Copula

The polite, past negative form of 粗粒玄武岩

1. It wasn't coarse-grained basalt.

Past/Perfective
Negative
Polite
Casual Register
Geology