The Longbrake is a mercury mine located in Douglas 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.
Longbrake MRDS details
Site Name
Primary: Longbrake
Commodity
Primary: Mercury
Location
State: Oregon
County: Douglas
District: Bonanza Area
Land Status
Land ownership: Private
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
Type: Unknown
Ownership
Owner Name: Douglas Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Oregon Coast Range
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: L
Description: Faults
Alterations
Alteration Type: L
Alteration Text: Sandstone Is Weakly Altered And Iron Stained
Rocks
Name: Sandstone
Role: Host
Age Type: Host Rock
Age Young: Eocene
Name: Sandstone
Role: Host
Age Type: Host Rock Unit
Age Young: Eocene
Analytical Data
Analytical Data: ASSAYS SHOW TRACE HG IN SANDSTONE
Materials
Not available
Comments
Comment (Geology): ONLY TRACES OF CINNABAR WERE FOUND. CHALCEDONY AND LIMONITE VEINLETS.
References
Reference (Deposit): BROOKS, H. C., 1963, QUICKSILVER IN OREGON: OREGON DEPT. OF GEOLOGY AND MINERAL INDUSTRIES, BULL. 55, 223 P.
Reference (Deposit): RAMP, L., 1972, GEOLOGY AND MINERAL RESOURCES OF DOUGLAS COUNTY, OREGON: ODGMI BULL. 75, P. 53
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.
