The Atlantic Cable Quartz Lode is a gold mine in Deer Lodge County, Montana.

Machinery for the first mill was imported from Swansea, Wales, and moved by wagon team from Corinne, Utah, the nearest railroad terminal.

The town which grew up around the mine, Cable, Montana, boomed and busted four distinct times: 1867–1869, 1873–1878, 1883–1891 and 1902–1940.

The Atlantic Cable Quartz Lode mine was operated with varying success until about 1880, when extremely rich ore was located.

W. A. Clark paid $19,000 for one chunk of ore taken from this mine in 1889 and claimed it was the largest gold nugget ever found.