Written in the Hills
Geology of the Ozarks, part 2
Bruce Stinchcomb

Ozark shut-ins, delightful natural water parks. Minerals mined from Ozark Precambrian
rocks are (or where) silver bearing galena, argentite, huebernite (tungsten), pyrolusite and
wad (manganese) and iron minerals (hematite and magnetite). Rare earth minerals are also
known to occur and may be mined in the future.

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Ozarks Paleontology