The Porphyry Mill Claims is a gold and silver mine located in Grant county, Oregon.
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
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.
Porphyry Mill Claims MRDS details
Site Name
Primary: Porphyry Mill Claims
Commodity
Primary: Gold
Primary: Silver
Location
State: Oregon
County: Grant
District: Susanville
Land Status
Administrative Organization: Malheur Natioal Forest
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Blue Mountain Section
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Plutonic Rock
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Analytical Data
Analytical Data: 15 FOOT CHANNEL SAMPLE AVERAGED $1.80 A TON (ORE. BUR. MINES, 1916)
Materials
Gangue: Quartz
Gangue: Sericite
Comments
Comment (Deposit): MINERALIZATION OCCURS IN AND ALONG THE CONTACTS OF THREE, 30 TO 40 FOOT WIDE QUARTZ DIORITE PORPHYRY DIKES. ; INFO.SRC : 1 PUB LIT
Comment (Workings): WORKINGS CONSIST OF A NUMBER OF TUNNELS AND ADITS.
References
Reference (Deposit): PARKS, H.M. AND SWARTLEY, A.M., 1916, METAL MINES HANDBOOK; OREGON BUREAU OF MINES VOL. 2, P. 182
Oregon Gold
"Where to Find Gold in Oregon" 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 Oregon. Read more: Where to Find Gold in Oregon.
