SUPPORT US. If is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
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
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Crow claims, Ash Peak District, Graham Co., Arizona, USA

This page is currently not sponsored. Click here to sponsor this page.
A former surface Mn mine located on 4 contiguous unpatented claims in the center N½ sec. 14, T8S, R30E, about 1.0 mile SE of Ash Peak Summit, adjacent to the A-1 claims, 14.8 miles WNW of Duncan on/near the Greenlee County line, on BLM-administered land. Geodetic and UTM coordinates describe prospects in the NE¼ of the section. Discovered in 1951 by C.M. Magill. Owned by C.M. Magill and Associates (1961). Operated by Mr. John T. Morris.

Mineralization is in lenticular and irregular bunches in two fractures. The northern fracture ore zone is 300 feet (91.44 meters) long, 3 feet (0.91 meters) wide, strikes N to N50W, and dips W to 60NE. The southern fracture ore zone is 50 feet (15.24 meters) long, and 3 feet (0.91 meters) wide, strikes N to N50W and dips W to 60NE. The mineralized zones are hosted in andesite. Gangue consists primarily of unmineralized fragments of volcanic rock and calsite. Ore control was two N-trending fractures that cut fine-grained volcanic rock. Alteration on surface. An associated rock unit is rhyolite. Deposits are similar to those encountered on the A-1 group claims and the Black Beauty group claims.

Area structures include steep northerly-trending zones of shearing and brecciation in volcanic rocks. Manganese deposits form lenticular bodies composed of a network of narrow seams and small, irregular bunches of oxides deposited around fragments of country rock.

Workings are 76.2 meters long and 3.66 meters deep. Developments included shallow open cuts on both veins. Most ore was recovered from 3 shallow open cuts on the north vein.

Mineral List

2 entries listed. 1 valid mineral.

The above list 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.


Farnham, L.L., Stewart, L.A., and Delong, C.W. (1961), Manganese Deposits of Eastern Arizona, US Bureau of Mines Information Circular 7990: 105.

U.S. Bureau of Mines files, Crow group.

MRDS database Dep. ID #10026949, MRDS ID #M001257.

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 19, 2019 11:41:32 Page generated: January 25, 2015 04:22:46
Go to top of page