Using decomposing galena, Mother Nature produces a wonderful suite of secondary lead minerals. Reaching deep into the earth — at times over 1,000 feet in desert regions — surface waters charged with oxygen and plant acids attack deep-seated sulfide ores, including galena, breaking down to release lead ions and combine with carbonates, sulfates, arsenates, or oxides. The process produces common colorful beauties like wulfenite, mimetite, pyromorphite vanadinite, and cerussite in abundance. Rare lead minerals like leadhillite also form.
Esta historia es de la edición February 2021 de Rock&Gem Magazine.
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