History of Porphyry Mountain

Local name reported in 1908 by D.C. Witherspoon (Moffit and Capps, 1911, pl. 3), U.S. Geological Survey (USGS). So named because the mountain is largely composed of porphyry, a type of igneous rock.

Found on the following Topo Maps

Places Near Porphyry Mountain

Nizina, Sourdough,

McCarthy,

Jim Edwards Dam,

Gates Glacier, McCarthy Creek Glacier, Root Glacier, Stairway Icefall, West Fork Glacier,

Baultoff Lakes, Star Lake, Threemile Lake,

Nizia,

Bonanza Mine, Green Butte Mine, Jumbo Mine, Mother Lode Mine, Nikolai Mine, Regal Mine,

Bonanza Peak, Donoho Peak, Green Butte, Porphyry Mountain, Sourdough Peak,

Kennecott Mines National Historic Landmark,

Nikolai Pass,

Bonanza Ridge, Sourdough Hill,

Kennicott River,

Amazon Creek, Bonanza Creek, Chititu Creek, Dimond Creek, East Fork McCarthy Creek, Farm Creek, Fireweed Creek, Fourth of July Creek, Jumbo Creek, Lake Creek, Lubbe Creek, May Creek, McCarthy Creek, National Creek, Nikolai Creek, Swift Creek, Young Creek,

Bonanza Mine Road, Bonanza-Jumbo Mine Road, Erie Mine Trail, Jumbo Mine Trail, Root Glacier Trail,

Amazon Gulch, Fivemile Gulch, Kaufman Gulch, Sawmill Gulch,

Kennicott, May Creek,