Alkaline Rocks and Carbonatites of the World

Funded by HiTech AlkCarb - New geomodels to explore deeper for Hi-Tech critical raw materials in Alkaline rocks and Carbonatites

Hecla-Kilmer

stripes

Occurrence number: 
031-00-060
Country: 
Canada
Region: 
Ontario
Location: 
Longitude: -81.87, Latitude: 50.32

The Hecla-Kilmer complex is completely covered by muskeg and glacial deposits, but aeromagnetic data indicate a complex of 18 km2. Drilling has proved the presence of essexite, ijolite, pyroxenite and nepheline syenite.

Age: 
Rb-Sr data were obtained by Bell and Blenkinsop (1980, p.17) but did not define an isochron. A least-squares fit line placed through the data points indicated an age of 450 Ma, but this was not considered reliable.
References: 
BELL, K. and BLENKINSOP, J. 1980. Grant 42 ages and initial 87Sr-86Sr ratios from alkalic complexes of Ontario. Miscellaneous Paper, Ontario Geological Survey, 93: 16-23. SAGE, R.P. 1977. Carbonatite-alkalic complexes. Miscellaneous Paper, Ontario Geological Survey, 75: 69-79. R.P. Sage personal communication, 1983
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith