Donate now to keep alive!Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
What is a mineral?The most common minerals on earthMineral PhotographyThe Elements and their MineralsGeological TimeMineral Evolution
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Spring Creek Mine (Yankee Dollar Mine; Old Mankins prospect), Brady Canyon, Spring Creek District, Gila Co., Arizona, USA

This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84): 34° 4' 37'' North , 111° 4' 32'' West
Latitude & Longitude (decimal): 34.07694,-111.07556
Köppen climate type:Csa : Hot-summer Mediterranean climate
Other regions containing this locality:Sonoran Desert, North America

A former underground Au-Pb-Ag-Cu mine located in the NE¼SW¼ sec. 36, T9N, R12E, 9 miles S of Young, located in Brady Canyon, 1¼ miles SW of Mail Box Mesa, on National Forest land. Produced 1926-1931. The property was comprised of 12 unpatented claims in 1981. Owned by Mr. Lee Folks, Young, AZ, and Mr. Evart Bunger, Globe, AZ (1981). Operated by the Silver Bullet Co. of Young, AZ (1981). Past operators included John Carolan; M. McAuliffe; and Spring Creek Leasing. A Mr Mankins operated the mine for gold previous to 1926.

Mineralization is a vein deposit with ore in lenses, stringers, and mainly lenticular bodies, hosted in Precambrian Pinal Schist. The ore zone is 365.76 meters long, 0.91 meters wide, striking N60E, and dipping 80S to vertical. The vein ranges in size from stringers to 3 feet locally, but averages a few inches wide. Ore concentration was secondary mineralization and mesothermal from pyrite, chalcopyrite and galena.

Area structures include the scistosity of the Precambrian Pinal Schist, which generally trends N40-60E. The shcist is overlain by Scanlon Conglomerate about 100 feet thick. Unconformably above is a Tertiary basalt flow. South of the deposit is a mass of Precambrian quartz porphyry. Precambrian Apache Group is exposed in the region, but is missing near the mine. Veins are structurally undisturbed locally, although there may be a fault along Spring Creek.

1981 plans were to clean up old workings and produce ore from a small block.

Mineral List

2 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

1600 - 1800 Ma

ID: 2781097
Early Proterozoic metavolcanic rocks

Age: Statherian (1600 - 1800 Ma)

Stratigraphic Name: Pinal Schist; Yavapai Supergroup; Tonto Basin Supergroup; Vishnu Schist

Description: Weakly to strongly metamorphosed volcanic rocks. Protoliths include basalt, andesite, dacite, and rhyolite deposited as lava or tuff, related sedimentary rock, and shallow intrusive rock. These rocks, widely exposed in several belts in central Arizona, include metavolcanic rocks in the Yavapai and Tonto Basin supergroups. (1650 to 1800 Ma)

Lithology: Major:{metavolcanic}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

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.


Rand, L.H. & Sturgis, E.B. (1931) The Mines Handbook, Vol. XVIII: 1660 (see Bald Eagle Mining Co.).

U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology file data.

Arizona Department of Mineral Resources Spring Creek Mine file.

USGS Buzzard Roost Mesa Quadrangle map.

MRDS database Dep. ID #10046309, MRDS ID #M241213; and Dep. ID #10185885, MAS ID #0040070634.

Yale Peabody GNIS database (NOTE: this database is derived from USGS 1:24,000 topographic map data).

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 17, 2018 15:06:50 Page generated: October 17, 2017 03:27:32
Go to top of page