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Winifred Mine, Mowry Wash, Mowry, Patagonia District, Patagonia Mts, Santa Cruz Co., Arizona, USA

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‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 320-321.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 16 (Table 1).

USGS Lochiel Quadrngle topo map.

U.S. Bureau of Mines field notes.

Arizona Bureau of Mines card file Santa Cruz County.

U.S. Bureau of Mines Coronado National Forest Study Report.

MRDS database Dep. ID file #10210866, MAS ID #0040230408.

A former underground Cu-Pb mine located in the NW¼ (N½ of center) sec. 28, T.23S., R.16E. (Lochiel 15 minute topo map), 1¼ miles east of the Four Metals Mine, 2 miles NW of Washington, and 3½ miles SSW of Mowry, in the head of a small canyon at the SW head of Mowry Wash, at an elevation of about 6,000 feet, on National Forest land. Owned by Mr. George Gross ( -1905); the Four Metals Mining Co. (1905-1915 & beyond ?).

Country rock is Paleozoic quartzite and shale, which is intruded and overlain by a much-altered vitreous rhyolite porphyry. A dark basic altered intrusive rock appears in the face of the tunnel, aseemingly andesite or diorite, which contains considerable hornblende and magnetite.

The deposit occurs in the upper workings in an irregular, nearly falt-lying body or ore bed, a little due NW of, and 200 feet above, the mouth of the lower tunnel. The orebody dips 20ºENE. and is interbedded in the silicified sedimentary rocks and capped by the rhyolite. It contains mainly limonite, together with the ore minerals in a banded quartz gangue.

The lower workings are principally in altered rhyolite, underlain by quartzite and traversed by several north-south fissures amd an east-west fault which is followed by the drift. They show no mineralization other than a little iron stain on the gouge of the east-west fault, which is about 7 inches (17.5 cm) wide.

Workings include 1,000 feet of tunnels, drifts, and stopes, mostly on the lower level, at an elevation of about 5,725 feet. The lower level contains a 415 foot tunnel driven to the south with 175 feet of drift in which there is a 60 foot winze.

Mineral List

4 entries listed. 3 valid minerals.

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