Grijalva Mine (Grijalva group; Coarse Gold and A.W. Higley Patented claims), Yavapai Co., Arizona, USA
|Latitude & Longitude (WGS84):||34° 3' 34'' North , 112° 38' 30'' West|
|Latitude & Longitude (decimal):||34.05944,-112.64167|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
Ref.: USGS Mineral Resources (1908) Part 1: 8: 310.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.
Arizona Department of Mineral Resources Coarse Gold and S.W. Higley file.
USGS Sam Powell Peak Quadrangle map.
U.S. Bureau of Land Management Mining District maps.
MRDS datbase Dep. ID #10104148, MRDS ID #M800209; and, Dep. ID #10210450, MAS ID #0040250510.
A former underground Au-Ag-Cu mine. Discovered in 1895 by Pedro Zarilla (Grijalva). Produced 1908-1936.
Mineralization is a vein deposit with a tabular ore body. Ore control was faulting, shearing, and igneous activity (dikes). Ore concentration was oxidation at near surface. Alteration was minor to none.
Area structures include foliation in Precambrian schist and gneiss that trends N25E to N65E. Veins (and genetically-related [?]) dikes trend across Precambrian fabric.
1 valid mineral.
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 Macrostrat.org
1600 - 1800 Ma
|Early Proterozoic granitic rocks|
Age: Statherian (1600 - 1800 Ma)
Description: Wide variety of granitic rocks, including granite, granodiorite, tonalite, quartz diorite, diorite, and gabbro. These rocks commonly are characterized by steep, northeast-striking foliation. (1600-1800 Ma)
Comments: ~ 1.6 - 1.8 Ga
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.