| Cabin Branch Pyrite Mine Historic District | |
| Nrhp Type: | hd |
| Nocat: | yes |
| Designated Other1: | Virginia Landmarks Register |
| Designated Other1 Date: | June 12, 2002[1] |
| Designated Other1 Number: | 076-0289 |
| Designated Other1 Num Position: | bottom |
| Location: | Prince William Forest Park, Triangle, Virginia |
| Coordinates: | 38.5767°N -77.3506°W |
| Added: | December 12, 2002 |
| Refnum: | 02001517 |
Cabin Branch Pyrite Mine Historic District is a national historic district located at Prince William Forest Park, Triangle, Prince William County, Virginia. It encompasses 4 contributing sites and 42 contributing structures associated with the Cabin Branch pyrite mine. The pyrite mine opened in 1889, and remained in operation until 1919 or 1920. The property includes a number of capped mine shafts, and the remains of a commissary building and an old mill; and mine structures, including crusher house, mill, mechanical and support buildings, numerous rail lines.[2]
It was added to the National Register of Historic Places in 2002.