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Thorite from
Danburite type locality, Danbury, Fairfield County, Connecticut, USA

Comments:With oligoclase, danburite, titanite, and augite. Often embedded in the danburite. The original literature gives crystallographic data but no chemical analyses. Given that thorite is isostructural with the much more common mineral zircon, these crystals could be that mineral. The literature predates radiological knowledge and testing, type specimens of danburite with this mineral should be checked for radioactivity. Nothing matching Shepard's description is visible on specimens at Yale Peabody Museum.
Habit:minute square prisms with truncated edges and pyramidal terminations
Colour:black to garnet red
Abundance at site:Rare
References:Shepard, Charles U. (1851): On new localities of American minerals. American Association for the Advancement of Science Proceedings 4th Meeting: 319. (see also American Journal of Science (1851): series 2, 12: 220); Dana, James D. (1857): Fourth Supplement to Dana's Mineralogy. American Journal of Science: series 2, 24: 124.
Mineral Data:Click here to view Thorite data
Locality Data:Click here to view Danburite type locality, Danbury, Fairfield County, Connecticut, USA
Nearest other occurrences of Thorite
1.7km (1.1 miles) North Street mall, Danbury, Fairfield County, Connecticut, USA
15.8km (9.8 miles) Tilly Foster Iron Mine, Brewster, Town of Southeast, Putnam Co., New York, USA
76.4km (47.5 miles) Simpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA
80.2km (49.8 miles) Connecticut Yankee atomic power plant, Haddam Neck, Haddam, Middlesex Co., Connecticut, USA
99.7km (61.9 miles) Trotter Mine (Lehigh Mine; Trotter Shaft; Trotter Dump), Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA
99.7km (62.0 miles) Buckwheat pit (Southwest opening; Buckwheat Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA
Mineral and/or Locality  
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