Latitude & Longitude:
35° North , 110° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
A gypsum occurrence along highway 60 near Long Tom Canyon.
The lower zone gypsum occurs within the lower Supai Formation within a stratigraphic interval of approximately 100 feet, the top of which is approximately 200 feet below the base of the Ft. Apache Limestone Member of the Supai Formation. It consists of from 1 to 3 gypsum beds ranging in thickness from 1 to 12 feet each, and each separated by from 20 to 40 feet of clastic strata. Exposures of the lower zone gypsum are known in both the upper and lower blocks, but are more extensively exposed in the lower block.
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No minerals currently recorded for this locality.
List of minerals for each chemical element
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Moore, R.T. (1968), Mineral Deposits of the Fort Apache Indian Reservation, Arizona, University of Arizona – Arizona Bureau of Mines Bulletin 177: 66.
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