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Cumberlandite is the state rock of Rhode Island and a specific type of plutonic rock called a melanocratic troctolite, or melatroctolite. [1] [2] It can be found in a 4-acre (0.016 km 2) lot in Blackstone Valley, Cumberland at Iron Mine Hill in the Franklin Quadrangle, just east of Woonsocket. [3] Further traces can be found scattered ...
Jul 23, 2014 · It is Rhode Island's state rock. Cannons were made from it during the Revolutionary War. It is magnetic, high in iron and titanium, and frequently mistaken for a meteorite when found off this location. What appears to be an Indian burial site is found next door in the Ballou Cemetery; all of the stones are made from Cumberlandite.
- Elder Ballou Meeting House Rd, Cumberland, RI
Jun 11, 2021 · Walking RI: Hunt for RI's rare state rock at Cumberland's Blackall/Ballou Preserve. Bring a magnet along to find a sample of the iron- and titanium-rich mineral named Cumberlandite, only found in ...
- John Kostrzewa
In 1966 by the Rhode Island General Assembly officially adopted Cumberlandite because it is extremely rare and for its unique nature as the official state rock of Rhode Island (Resolution #268). It is only found in large concentrations on a 4-acre lot in Blackstone Valley, Cumberland, and in traces scattered throughout the Narragansett Bay ...
Jan 19, 2023 · Cumberlandite is only available in large concentrations in one place in the entire world, a 4-acre area off West Wrentham Road and Elder Ballou Meeting House Road.
The Rhode Island state rock Cumberlandite is a rare iron-rich mineral unique to the region. The only large deposit of the mineral in the world is found off Elder Ballou Meeting House Road in northern Cumberland. Though the ore was used to make cannons during the colonial era, the resulting casts were of poor quality and prone to cracking.
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Oct 5, 2017 · The state rock, Cumberlandite, may exist nowhere else on Earth except Rhode Island, and it’s rare even within state borders (almost all of it is found in a small area of Cumberland). Other hard-to-come by geological specimens include natural copper crystals and Danalite, says Rhode Island Mineral Hunters (RIMH) club president Bill Wilson.
