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INTRODUCTION..
CONTENTS.
CHAPTER I. SOURCES OF MANGANESE..
Manganese ores.
Oxides..
Carbonates...
Silicates and other minerals....
Table of manganese minerals..
Manganese in the deep sea...
Manganiferous iron ores..
Manganiferous silver ores..
Manganiferous zinc residuum
CHAPTER II. MANGANESE DEPOSITS OF THE UNITED STATES.
New England region and New York..
New England crystalline area..
New England sedimentary area..
General statement..
Vermont..
New York...
Commercial importance of the ores.
Piedmont region and Coastal Plain.........
General statement...
Franklin Furnace, N. J..
James River-Staunton River region
Geography and geology....
Occurrence of the ores..
Descriptions of mines and deposits..
Minor deposits..
New Jersey..
Pennsylvania.
Maryland.....
North Carolina and South Carolina...
Georgia..
Origin of the manganese ores of the Piedmont region..
Commercial importance of the ores
Appalachian region..
Blue Ridge region..
Geography and topography.
Geology....
Occurrence and character of the ores..
General relations.....
Forms of the ores..
Descriptions of mines and deposits...
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