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

Herman Lake

stripes

Occurrence number: 
031-00-069
Country: 
Canada
Region: 
Ontario
Location: 
Longitude: -84.05, Latitude: 48.02

Emplaced into Archaean greenstones and granites which are strongly sheared near to the contacts, the intrusion is about 8x3 km and consists of nepheline syenites of variable colour index. Alkali feldspars form aligned tablets; there is abundant nepheline, cancrinite and biotite, variable pyroxene and coarse white calcite is widespread. Lenses of carbonate with biotite and pyrite occur in the schists close to the syenite. Neither mapped nor described in detail.

References: 
GLEDHILL, T.L. 1928. Goudreau - Lochalsh gold area, District of Algoma. Annual Report, Ontario Department of Mines, 36(2): 51-86
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith