Pakeagama Lake pegmatite, Red Lake, Kenora District, Ontario, Canada

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The Pakeagama Lake pegmatite, located 160 km north of Red Lake, is one of the largest and most highly evolved rare-element-mineralized pegmatite systems in the Superior Province of Ontario, Canada. It is a LCT pegmatite enriched in Li, Cs, Rb, Ta, Sn etc.

References

Breaks, F.W., Tindle, A.G. and Smith, S.R. (1999) The Pakeagama Lake pegmatite: continued field and laboratory investigation of highly evolved, complex-type, petalite-subtype rare-element mineralization in the Berens River-Sachigo Subprovince Boundary Zone. In "Summary of Field Work and Other Activities 1999", Ontario Geological Survey, Open File Report 6000, p. 26-1 to 26-12.

Tindle, A.G., Breaks, F.W., and Selway, J.B. (2002) Tourmaline in petalite-subtype gramitic pegmatites: evidence of fractionation and contamination from Pakeagama Lake and Separation Lake areas of northwestern Ontario, Canada. Canadian Mineralogist, 40, 753-788.

Smith S.R., Foster, G.L., Romer, R.L., Tindle, A.G., Kelley, S.P., Noble, S.R., Horstwood, M. and Breaks, F.W. (2004) U-Pb columbite-tantalite chronology of rare-element rare-element pegmatites using TIMS and Laser Ablation-Multi Collector-ICP-MS. Contributions to Mineralogy and Petrology, 147, 549-564.

Smith, S.R., Kelley, S.P., Tindle, A.G. and Breaks F.W. (2005) Compositional controls on 40Ar/39Ar ages of zoned mica from a rare-element pegmatite. Contributions to Mineralogy and Petrology, 147, 613-616.

- http://www.houstonlakemining.com/news/article2.html [Link dead. Jun 2011]

Mineral List

Columbite-(Fe) Columbite-(Mn) Lepidolite Microlite Group

Petalite Pollucite Quartz Spodumene

Stibiotantalite Tantalite-(Fe) Tantalite-(Mn) Tapiolite-(Fe)

'Tourmaline' Wodginite

14 entries listed. 13 valid minerals.