硫酸 りゅうさん鉛鉱 えんこうでしょう
ryūsan'enkōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 硫酸鉛鉱

1. Probably galena.; Probably lead sulfate.

Polite
Presumptive
Conjecture
Mineralogy