かがやき ぎん銅鉱 どうこうではありませんでした
kagayakigindōkōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 輝銀銅鉱

1. Was not a silver-copper ore.

Past/Perfective
Negative
Polite
Formal Register
Geology