pay streak 富矿脉
富矿线
富线
Pay streak \Pay streak\
1. (Mining) The zone, parallel to the walls of a vein, in
which the ore is concentrated, or any narrow streak of
paying ore in less valuable material.
[Webster 1913 Suppl.]
2. (Oil Boring) A stratum of oil sand thick enough to make a
well pay.
[Webster 1913 Suppl.]