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Concentration of Manganosiderite Ore from Leadville, Colo
Fred Daniel De Vaney
S. M. Shelton
出版
U.S. Department of the Interior, Bureau of Mines
, 1940
URL
http://books.google.com.hk/books?id=SLOKQ9SLY6EC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
Manganese-bearing deposits of the Leadville, Colo., district are of two distinct types. Manganosiderite, a combined or intimately mixed ferrous and manganous carbonate, occurs in unaltered zones as the predominant mineral. From 50 feet below the surface to as deep as 800 feet, psilomelane and wad, both black manganese oxide minerals, are found in intimate contact with hematite and limonite.
