London Mine, Methow Mining District, Okanogan County, Washington, USAi

Regional Level Types
London Mine	Mine
Methow Mining District	Mining District
Okanogan County	County
Washington	State
USA	Country

A gold mine above the west side of the Methow River. The ore occurred in a generally narrow quartz vein following a dike. It was developed by several adits and an open cut.

Note: Huntting (1956) lists this mine as being also called the "Methow". This is somewhat confusing as the other mines listed as the "Methow" includes the Homestake and Roosevelt prospects which are separate.
Structure: Reverse Faults, Crosscutting Dikes

Tectonics: Cascade Volcanic Arc

Deposit: Mineralized quartz veins 3 in.-15 ft wide. New london vein: narrow mineralized quartz vein along footwall of a narrow basic dike (n60e, 55nw); homestake vein: wide mineralized quartz vein; homestake-long adit vein: 3 ft wide quartz vein; mineralite vein: 2-4 ft quartz vein; roosevelt vein: 2.5-3 ft quartz vein with podfs of sulfides in vein walls, scheelite in pockets and stringers; milwaukee vein: scheelite in footwall quartz 4 claims on east side of hunter mtn on west side of methow river and at least 3 claims east of river. ; info.src : 1 pub lit; 2 unpub rept

Deposit type: Polymetallic veins

Geology: Narrow inclined dike along NEW london vein is cut by 3-4 ft wide vertical basic dike (n60e). Southward (upper) part of inclined dike has been faulted several ft upward along vertical dike relative to lower part. Ore body is in the part of the vertical dike between faulted parts of the inclined dike and has same mineral composition As narrow vein. Ore body is cut by several reverse faults (about n75w, 55sw). Each fault displaces upper part of ore body As much As 10 ft to the ne.

Rock formation(s): Methow Gneiss


Ore(s): Dikes

Other Databases

Link to USGS MRDS:	10041672

Localities in this Region

Other Regions, Features and Areas containing this locality

References