A geologic map and a bulletin describing the geology and mineral deposits of Gillespie County, Texas, is being prepared. Awaiting completion of this map and bulletin, abbreviated mimeographed circulars describing the more important mineral deposits are being issued.

A geological investigation project was established in Atascosa County for two reasons:
(1) To search for high alumina clays; and
(2) To search for deposits of road metal.

Because of the scarcity of known deposits of suitable road materials in the county, the County of Atascosa contributed to the sponsorship of the project by furnishing transportation for the workers. Extensive coring with 3-inch hand augers revealed several occurrences of relatively high-grade clays of the so-called bentonitic type. The search for suitable road materials was less successful.

This preliminary report describes the Medley district in Jeff Davis County, Texas, where kaolin deposits have been found and where rutile has recently been discovered. Baker (2) has already briefly described the Medley Ranch kaolin deposit, but so far nothing has been published on the rutile.

Bentonite was discovered in Houston County in 1940 by a staff member of the Bureau of Economic Geology. On correlation of the sections in which the bentonite was exposed, namely, at Hurricane Bayou and Alabama Ferry, it was found that, though these localities were some 20 miles apart, the two sections were almost identical. This led to the obvious conclusion that the shale member containing the bentonite was continuous throughout the intervening area.

Bleaching clay investigations in Gonzales County were made for the following reasons:
1. To collect data on the types of deposits and mode of deposition.
2. To direct attention to any new sites discovered.
3. To eliminate seemingly valueless areas.