Marmora Township, Hastings County, Ontario, Canada
Key Information
Do not enter mining areas without proper authorization.
The Marmoraton Mine is in Marmora Township, Hastings County, Ontario, Canada, roughly halfway between Ottawa and Toronto.
It produced iron ore and various minerals, including rare ones like Axinite-(Fe) and Palygorskite.
The mine is in Precambrian meta-sediments, formed by ancient geological processes.
Mining started in the 1940s, peaked with half a million tons of iron annually, and closed in 1978.
The local community embraces its mining heritage through tours and local businesses.
The area has a humid continental climate with pristine waterways and parks.
Geographic Location
The Marmoraton Mine is located in Marmora Township, Hastings County, Ontario, Canada, in the southeastern part of the province. Ontario is in eastern Canada, and Marmora is about halfway between Ottawa and Toronto, making it accessible yet secluded. Nearby, Cordova Mines is known for gold and silver, and the Bancroft area is famous for mineral collecting, enhancing the region's appeal for enthusiasts.
Minerals Produced
The mine primarily extracted iron ore but also yielded a diverse range of minerals from its Precambrian meta-sediments. Notable finds include Actinolite, Albite, Almandine, Andradite, Ankerite, Axinite-(Fe), Baryte, Biotite, Calcite, Chalcopyrite, Chlorite Group, Dolomite, Epidote, Goethite, Grossular, Gypsum, Hedenbergite, Hematite, Hornblende Root Name Group, Magnesite, Magnetite, Malachite, Marcasite, Palygorskite, Pyrite, Pyroxene Group, Pyrrhotite, Quartz, Serpentine Subgroup, Sphalerite, and Titanite. Axinite-(Fe) and Palygorskite are particularly rare, attracting mineral collectors.
Geological Structure and Mining History
The mine's geological setting is Precambrian meta-sediments, ancient rocks transformed by heat and pressure, rich in minerals. Mining began in the 1940s due to World War II demands, with official opening in 1952 marked by a dynamite blast heard 30 miles away. At its peak, it produced half a million tons of pelletized iron annually, with the pit reaching 750 feet deep. It closed in 1978, impacting 300 jobs, and later parts were used for limestone crushing and talc processing until 2010.
Local Culture and Climate
Marmora's culture is deeply tied to its mining past, with the community adapting post-closure through initiatives like the Miners’ Loop tour and The Miners Restaurant, which displays mining artifacts. A "Buy Locally Owned" movement supports local artisans. The area has a humid continental climate, with warm summers and cold winters, featuring pristine waterways and parks, ideal for outdoor activities. The mine site, now a water-filled pit, is a historical and ecological landmark.
Citations
- Mindat.org Marmoraton Mine minerals and history
- MarmoraHistory.ca The Mighty Marmoraton Mine details
- Hastings County Marmora community and attractions
- Bancroft Ontario Marmoraton Mine rock collecting
- Wikipedia Marmora Ontario general location context
- Marmora and Lake Miners’ Loop self-guided tour
- Harvest Hastings Marmora Market seasonal offerings
- Marmora and Lake Attractions including Memorial Park
- MarmoraHistory.ca Marmora Takes No Trash landfill opposition