Author
Joseph, P.E.Issue Date
1916-12-12Keywords
Arizona Geological Survey BulletinsRecent
United States of America
commercial interests
iron ore
turgite
goethite
siderite
magnetite
limonite
hematite
metallic element
Metal
iron
Metadata
Show full item recordPublisher
University of Arizona Bureau of MinesDescription
With the exception of aluminum, iron is the most abundant metallic element constituting the earth's crust. According to Clarke, the average of analyses of igneous rocks made in the laboratories of the United States Geological Survey showed 4.47 per cent iron. It occurs in nature native and in many compounds, giving rise to numerous minerals. Its most important ores are hematite, limonite, magnetite, and siderite. Goethite and turgite are commercially included with limonite under the name of brown hematite. 13 p.Additional Links
https://library.azgs.arizona.edu/item/AGSB-1552427060347-890Language
enSeries/Report no.
Bulletin No. 43Mineral Technology Series No. 15