かがやき すい鉛鉱 えんこうではありませんでした
kagayaki sui enkōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 輝水鉛鉱

1. Was not a lead-zinc ore.; Was not a shining water lead-zinc ore.

Past/Perfective
Negative
Polite
Formal Register