fissure vein

(geology) A crack in the surface of the Earth which contains mineral matter.

Japanese Meaning

(地質学) 鉱物が含まれる地表の亀裂、ひび割れ

The miners followed a rich fissure vein deep into the granite to extract the silver.

鉱夫たちは銀を採掘するために花崗岩の奥深くにある豊かな割れ目状の鉱脈をたどった。

Sense（1）

(geology) A crack in the surface of the Earth which contains mineral matter.

fissure veins

（ plural ）