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• • `. { <br />-3 - <br />The mineral is relatively better concentrated in eastern <br />portion of the claimed area. Placement of the arbitary boundary <br />of bentonite-bearing area (P1. I) is based on discovery holes <br />and open cuts where the mineral is exposed. <br />FIELD RELATIONS <br />As studded in pit No. I, immddiately below a soil cover <br />of about 3 feet, the mineral forms pink and green lenses in <br />bleached volcanic material. On the southwest wall of the same <br />open cut brigYit pink and almost pure bentonite appears beside <br />and acmewhat below the impure mineral. Red sandstones (Penn.) <br />underlie bentonite approximately 10 feet below the floor of <br />pit No. I. <br />In pit No. 2, bentonite layer appears. to be interlayered <br />with Pennsylvanian sandstones to the south and volcanic breccis <br />to the north. ( P1. II, Fig. 2). Mode of occurence of bentonite <br />in cut No. 3 is shown in P1. II, Fig. 3. Field relations of the <br />bentonite to sandstone suggest that bentonite forms a aurficiel <br />layer over the sandstones. <br />TONNAGE AND GRADE <br />Non-metallic minerals are valued because of their purity <br />and size (Bateman). Bentonite deposit studied in Lambergs claims <br />is fairly pure and is sufficientlg~ large in size to encourage <br />further development. <br />