Occurrence.—Talc was found to be a minor, but widespread, mineral in Miocene clastic sediments in the central Gulf Coast and was found in sediments examined from Florida, Alabama, and Mississippi. Though previously unreported in other than recent sediments from this area, talc was found locally to form a significant portion of the clay mineral or fine silt fraction of some sediments. At two of the four localities where the mineral was found, it occurred in the clay fraction of lower Miocene, non-marine, fluvial, and lagoonal sediments (locations A-1 and A-2, Fig. 1); at location F-1, talc was present in the clay fraction of middle Miocene marine clays and at location M-1 it was found to be a constituent in the fine silt fraction of lower Miocene marine clays.

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