The Big Boulder and Iron Ridge Prospect is a manganese and iron mine located in Maricopa county, Arizona.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Primary Mineral: Manganese, Iron
Lat, Long: 33.98, -112.16028
Map: View on Google Maps
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Big Boulder and Iron Ridge Prospect MRDS details
Primary: Big Boulder and Iron Ridge Prospect
District: Tip Top District
Land ownership: Federal
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Owner Name: Otto E. Elwert
Years: 1962 -
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Deposit Size: S
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland
Mineral Deposit Model
Description: Laminated, Banded Iron Minerals, Quartz
Alteration Type: L
Alteration Text: Silicification
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data: 24.6-33.1% FE, 1.04-2.5% MN, 31.8-51.8% SIO2, 0.15-0.4% TIO2,, 0.12-0.194% P, 0.1-0.12% S, MAX AND MIN OF 4 SAMPLES. OTHER ANALYSES INDICATED CO, NI, CU, V, AS, PB, ZN
Comment (Development): 19 CLAIMS AND 3 PLACERS
Comment (Deposit): IRON OXIDE BANDS ARE 1.8 IN. TO SEVERAL FEET THICK
Comment (Geology): TACONITE HAS WELL DEVELOPED SLATLY CLEAVAGE
Reference (Deposit): HARRER, USBM IC 8236, 1964, P64-66
"Where to Find Gold in Arizona" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more at Where to Find Gold in Arizona.