noun
pyrargyrite
A sulfosalt mineral, also known as dark red silver ore. Technical term used in mineralogy.
濃紅銀鉱は銀の重要な鉱石鉱物の一つである。
Pyrargyrite is one of the important silver ore minerals.
The Japanese name 濃紅銀鉱 is composed of 濃 (dark), 紅 (red), 銀 (silver), and 鉱 (ore), describing the mineral's appearance and composition. The reading is on'yomi.