硫酸 りゅうさん鉛鉱 えんこうじゃなかったです
ryūsan'enkōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 硫酸鉛鉱

1. It wasn't galena.; It wasn't lead sulfide.

Past/Perfective
Negative
Polite
Casual Register
Mineralogy