Quantrell Mine

Alternate Names

Part of the Elephant Head group of mines - Horse Shoe, Grand Prize, Look Out, Tip Top, Quantrell, Eureka, Homestake, and Stonewall Claims, plus Elephant Head Mill Site.

Reference [2]

Mining District and Mines

Tyndall District

Historical: Shaft, 228 feet, and 769 feet of total workings.
A preliminary examination of the mine stated that the Quantrell shaft has 140 feet of drifts, crosscuts, winzes, and raises on 50, 100, and 150 foot levels, but the shaft was caved in 1956(5).¹

USBM: Quantrell mine adit connects to caved shaft.¹

Lower Adit

Overview of Mine

Main Shaft

Main Shaft 2

Location

31.710118N, 110.924679³

SW¼, sec. 4
SE¼, sec. 5
NE¼ & ctr. sec. 8
NW¼ sec. 9
T. 20 S., R. 14 E.¹

Mineral Products

Historical: much of the ore averaged 1.5% Cu and 11oz/t Ag.¹

USBM: SR 315 - 327: Ag, <0.2 - 114 ppm; Au, <5 - 1,180 ppb; Cu, 9 - 10,000 ppm; Pb, 24 - 10,000 ppm; Zn, 16 - 20,000 ppm.
SR 318: 570 ppm Cd, 169 ppm Sb.
SR 320: 306 ppm Mo.¹

Geology

Quartz monzonite that has been intruded by rhyolite dikes, then faulted, altered, and mineralized. Argentiferous minerals were deposited in the fault and clayey alteration zones. Quartz veining, chalcopyrite, and pyrite were observed, and galena and sphalerite have been reported. (3, 20) ¹

Type of Operation and Production

Historical: Early 1900's and 1913 - 1914? (20)¹

References

1. Mineral Appraisal of Coronado National Forest, Part 12, Santa Rita Mountains Unit, MLA11-94 (1994). SR 591-609
   http://repository.azgs.az.gov/sites/default/files/dlio/files/nid1813/usbm_mla_011-94.pdf
2. Mining in the Santa Rita and Patagonia Mountains of Arizona, U.S. Department of Interior, 1915. Republished 2014 by Kerby Jackson.
3. Mike Bertram,
4. USGS Mineral Resources Data System - possibly using NAD72 (https://mrdata.usgs.gov/mrds/map-commodity.html#home)