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Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Horseshoe Mesa, Grandview District, Coconino Co., Arizona, USA
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Latitude: 36°1'3"N
Longitude: 111°58'26"W
 
 
A former Cu-U mine located in the NE¼ sec. 5, T30N, R4E, 0.8 km (0.5 mile) SSE of Horseshoe Mesa (coordinates of record) (Vishnu Temple 15 minute topo map), N of Grandview Point, South rim, Grand Canyon, on National Park Service land (Grand Canyon National Park). The Grand View Mine and (this) Last Chance Mine are the same (Mineralogy of Arizona, 3rd. ed.). Discovered 1890. First production was 1893 and the last was 1916.

The Grandview Mine officially closed in 1907, but went through a series of owners until William Randolph Hearst acquired the Grandview Mine. Hearst sold the property to the United States National Park Service in 1940 and it is now part of the Grand Canyon National Park. The Grandview Mine is now a roost for protected bat species including Townsend’s Big-eared Bat (Corynorthinus townsendii).

Mineralization is secondary Cu minerals with gangue species in a breccia zone along a monocline flexure in Shea basalt hosted in the Navajo sandstone. Redwall limestone is bleached, brecciated and marblized. The Grandview monocline lies along the WNW-trending Cremation fault.

Mineral List

Adamite
Anglesite
Aurichalcite
Azurite
Baryte
Brochantite
Carbonatecyanotrichite
Cerussite
Chalcanthite
Chalcoalumite
Chalcocite
Chalcophyllite
Covellite
Cyanotrichite
Devilline
Dickite
Grandviewite (TL)
Gypsum
Hemimorphite
Kaolinite
Langite
'Limonite'
Malachite
Metazeunerite
Olivenite
Osarizawaite
Parnauite
Pharmacosiderite
Philipsbornite
Scorodite
Smithsonite
Spangolite
Zeunerite


33 entries listed. 32 valid minerals. 1 type locality (valid mineral).

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References

Rogers, A.F. (1922), The optical properties and morphology of bisbeeite, American Mineralogist: 7: 153-154.

Gordon, S.G. (1923), Recently described 'bisbeeite' from the Grand Canyon is cyanotrichite, American Mineralogist: 8: 92-93.

Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 65.

Roseveare, G.H. (1969), in: USGS & Arizona Bureau of Mines, and U.S. Bureau Of Reclamation, Mineral and water resources of Arizona, Arizona Bureau of Mines Bulletin: 180.

Leicht, W.C. (1971), Minerals of the Grandview Mine, Mineralogical Record: 2: 214-221.

Breed, W.J. & Roat, Ed (1974), Geology of the Grand Canyon: 172, 174.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 6 (Table 1).

Wenrich, Karen J., et al (1992), USGS Bulletin 1683-D: D2.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 102, 123, 125, 127, 146, 157, 160, 162, 198, 201-202, 271, 285, 297, 316, 322, 365, 374, 429.

Arizona Department of Mineral Resources, Last Chance Mine file.

Bureau of Land Management Mining District sheet No. 102.

Emmons, S.F., USGS Bulletin 260: 221-232.

U.S. Atomic Energy Commission, USAEC Preliminary Report 172-479: 57.

USGS Minerals Yearbooks 1902-1967.

Unknown Author (2009), Grandview and Last Chance Mines – Bat gating project.

External Links

Minegates.com

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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