Coldwell complex (Record #171) rare-earth element deposit in Ontario, Canada

Coldwell complex

Alkalic igneous rare earth element deposit in Ontario, Canada

Geographic location

Country	Canada
State or province	Ontario
Geographic location:	-86.5, 48.783333
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Location references

Woolley, A.R., 1987, Alkaline rocks and carbonatites of the world; Part 1, North and South America: London, United Kingdom, British Museum of Natural History, 216 p.

Geologic characteristics

Deposit type	Alkalic igneous
REE minerals	bastnäsite synchysite pyrochlore columbite
Ore minerals	thorite zircon fluorite magnetite apatite titanite vanadium copper nickel nepheline ilmenite
Gangue minerals	quartz aegirine natrolite carbonate biotite sodalite zeolite
Host rock types	pegmatites in amphibole syenite nepheline syenite gabbro basic volcanics

Nearby scientific information

Geologic map unit	-86.5, 48.783333333333
Other databases	Find additional scientific data near this location

Economic information

Status	Occurrence

Comments

Includes Marathon Niobium, Marathon, REE, Mink Creek, Port Munroe, Yres Point, Garden Cove and Peninsula Hill occurrences. Alkaline complex has area of 580 km2.

Bibliographic references

Woolley, A.R., 1987, Alkaline rocks and carbonatites of the world; Part 1, North and South America: London, United Kingdom, British Museum of Natural History, 216 p.
Walker, E.C., Sutcliffe, R.H., Shaw, C.S.J., and Shore, G.T., 1993, Preliminary report on the petrology and chemistry of the rare metal occurrences hosted by the Coldwell Alkaline Complex: Ontario Geological Survey Open File Report 5840, 20 p.
Platt, R.G., 1996a, Chapter 4- Nepheline syenite complexes- An overview, in Mitchell, R.H., ed., Undersaturated alkaline rocks: Mineralogy, petrogenesis, and economic potential: Mineralogical Association of Canada Short Course 24, p. 63-99.