Polymetallic Sulfide

Some articles on polymetallic sulfide:

Natural Resource Economics - Perpetual Resources Vs. Exhaustibility - Trend Towards Perpetual Resources
... More recently, polymetallic sulfide deposits have been discovered and polymetallic sulfide "black muds" are being presently deposited from "black smokers" The cobalt scarcity ... grade material averaging 29.9% zinc, 2.3% lead, and 0.5% copper from massive ocean-bottom polymetallic sulfide deposits using an underwater vacuum cleaner-like ...