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Ledge prospect, Palmetto Mining District, Patagonia Mountains, Santa Cruz Co., Arizona, USAi
Regional Level Types
Ledge prospectProspect
Palmetto Mining DistrictMining District
Patagonia MountainsMountain Range
Santa Cruz Co.County

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Latitude & Longitude (WGS84):
31° 25' 14'' North , 110° 48' 25'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Kino Springs136 (2011)6.4km
Beyerville177 (2011)7.6km
Patagonia890 (2017)14.1km
Nogales20,252 (2017)15.0km
Francisco Miguel Cárdenas Valdez (Mascareñas)541 (2014)16.3km

‡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

Other Databases

USGS MRDS Record:10039618

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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