Uranpyrochlore, AKA Ellsworthite
Common name: Uranpyrochlore
Formula: (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
Size: 120*62*46mm
Approximate weight: 346g
Locality: MacDonald Mine, Monteagle Township, Hastings Highlands Municipality, Hastings County, Ontario, Canada
Uranpyrochlore, also known as ellsworthite, is an oxide mineral belonging to the pyrochlore group. It is named after Dr. E. H. Ellsworth. This mineral is typically found in pegmatites and hydrothermal veins associated with granite and other igneous rocks. It has a complex chemical composition, primarily consisting of uranium, oxygen, and elements like calcium, titanium, and cerium. Although uranpyrochlore can vary in color from brown to yellow or black, it can be seen in the black inclusions of this specimen
The Macdonald Mine, located in Elliot Lake, Ontario, Canada, was a uranium mine that operated during the 1950s uranium boom. Named after prospector Joseph Macdonald, it was part of the significant uranium production in the region. The mine extracted pitchblende, a uranium-rich mineral, and processed it for uranium oxide used in nuclear reactors. Since the Macdonald Mine ceased operations in 1960, specimens like this don’t appear on the market often.
55kCPM using the GQ GMC-600+ pancake tube
Uranpyrochlore (Ellsworthite) – MacDonald Mine, Hastings County, Ontario, Canada
NOTE: By purchasing this item you agree that you have read our
WARNINGS and NOTICES ! (also serves as FAQ’s)
