Ledge prospect, Palmetto Mining District, Patagonia Mountains, Santa Cruz Co., Arizona, USAi
|Regional Level Types|
|Palmetto Mining District||Mining District|
|Patagonia Mountains||Mountain Range|
|Santa Cruz Co.||County|
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Latitude & Longitude (WGS84):
31° 25' 14'' North , 110° 48' 25'' West
Latitude & Longitude (decimal):
Köppen climate type:
‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 291.
MRDS database Dep. ID file #10039618, MRDS ID #M050506.
A Cu prospect located 3/8 mile SE of the former Gray camp, location uncertain.
Mineralization involves a 50 foot wide siliceous ledge which dips steeply to the south and is traceable for about 1,000 feet and which in this distance cuts across the contacts of quartz monzonite with diorite and diorite with granite porphyry.
The ledge seems to be a sheared dike of the granite porphyry, for soon after passing into the main area of this rock it terminates or becomes lost and the vein matter of the ledge, which is largely quartz with seemingly altered feldspar, resemble the granite porphyry. The metallic minerals are copper and iron sulphides which begin 4 or 5 feet below the surface, are concentrated in the fractures and shear-plane faces of the ledge, mostly in association with quartz.
Workings include several pits.
List of minerals for each chemical element
|USGS MRDS Record:||10039618|
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