The Portland Group is a gold and copper mine located in Pinal county, Arizona at an elevation of 2,999 feet.
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.
Mine Info
Elevation: 2,999 Feet (914 Meters)
Commodity: Gold, Copper
Lat, Long: 33.2083, -111.00420
Map: View on Google Maps
Satelite View
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.
Portland Group MRDS details
Site Name
Primary: Portland Group
Secondary: Standard No 1 Claims
Secondary: Portland Claims
Secondary: Norah V Claims
Secondary: New State Claims
Secondary: M S 3892
Secondary: Ray Portland
Commodity
Primary: Gold
Primary: Copper
Tertiary: Lead
Tertiary: Silver
Location
State: Arizona
County: Pinal
Land Status
Land ownership: Mixed
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.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Ray Portland Mining Co Prop
Home Office: Arizona
Info Year: 1917
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Not available
References
Reference (Deposit): BLM MINING DISTRICT SHEET 633
Reference (Deposit): USGS TEAPOT MTN QUAD
Reference (Deposit): ADMR PORTLAND GROUP FILE
Arizona Gold
"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: Where to Find Gold in Arizona.
