The Mark Twain Claim is a manganese mine located in Clallam county, Washington at an elevation of 4,199 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.
Name: Mark Twain Claim
Elevation: 4,199 Feet (1,280 Meters)
Lat, Long: 48.01806, -123.74167
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.
Mark Twain Claim MRDS details
Primary: Mark Twain Claim
Land ownership: National Park
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: Harry Sweeds, Port Angeles, Wa.
Record Type: Site
Operation Category: Occurrence
Deposit Type: Replacement
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Deposit Size: S
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Olympic Mountains
Mineral Deposit Model
Age Type: Host Rock Unit
Age Young: Eocene
Age Type: Host Rock
Age Young: Eocene
Analytical Data: ASSAY: 27.3% MN
Comment (Geology): ONE 4-FOOT SAMPLE, TAKEN ACROSS THE MINERALIZED ZONE IN THE EASTERNMOST CUT, ASSAYED 27.3 PERCENT MN. WORK HAS BEEN INSUFFICIENT FOR DETERMINING THE STRIKE LENGTH OF THE DEPOSIT. THE BEST MINERALIZATION OCCURS IN THE WESTERN MOST CUT, AS THE ZONE BECOMES MORE SILICEOUS TO THE EAST.
Comment (Deposit): MANGANESE MINERALIZATION AT THE MARK TWAIN PROSPECT IS EXPOSED IN THREE SHALLOW OPENCUTS APPROXIMATELY 50 FEET APART. THE MANGANIFEROUS ZONE, WHICH IS ABOUT 4 FEET WIDE, STRIKES N. 55 DEG W. AND HAS AN ALMOST VERTICAL DIP. THE ORE MINERAL IS BEMENTITE ASSOCIATED WITH JASPER AND RED LIMESTONE.
Comment (Workings): 3 SHALLOW OPENCUTS.
Comment (Location): THE PROSPECT IS REACHED FROM PORT ANGELES BY FOLLOWING U.S. HIGHWAY 101 WEST 9 MILES TO THE ELWHA RIVER, THENCE SOUTH ON THE OLYMPIC HOT SPRINGS ROAD FOR 9 MILES TO THE HAPPY LAKE TRAIL. THE MARK TWAIN CLAIM IS NEEDED, AS THERE IS NO DEFINITE TRAIL DIRECTLY TO THE DEPOSITS.
Comment (Development): THREE SHALLOW OPENCUTS
Reference (Deposit): USBM RI 5530, P. 52, 77
"Where to Find Gold in Washington" 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 Washington.