scholarly journals Indicator mineral and till geochemical dispersal associated with the Ranch Lake kimberlite, Lac de Gras region, Northwest Territories

2000 ◽  
Author(s):  
M B McClenaghan ◽  
B C Ward ◽  
I M Kjarsgaard ◽  
B A Kjarsgaard ◽  
J A R Stirling ◽  
...  
Keyword(s):  
Northwest Territories ◽  
Indicator Mineral

scholarly journals Chemical studies of kimberlite indicator minerals from stream sediment and till samples in the southern Mackenzie region (NTS 85B, C, F, G), Northwest Territories, Canada

2021 ◽  
Author(s):  
I R Smith ◽  
S J A Day ◽  
R C Paulen ◽  
D G Pearson
Keyword(s):  
Rare Earth ◽  
Northwest Territories ◽  
Stream Sediment ◽  
Chemical Analyses ◽  
Great Slave Lake ◽  
Chemical Studies ◽  
Kimberlite Indicator Minerals ◽  
Indicator Mineral ◽  
Indicator Minerals ◽  
Field Area

Till (n=196) and stream sediment (n=60) samples were collected in the area south and west of Great Slave Lake, Northwest Territories (NTS 85B, C, F, and G), over the course of 3 summer field seasons. Samples were processed to recover kimberlite and other indicator minerals. This report summarizes results of the kimberlite indicator mineral (KIM) studies, including measures of KIM mineral types, abundances, and chemistry (major, trace, and rare earth elements). KIMs were present in 24% of the samples collected, and only 183 KIM grains in total were recovered, of which Cr-pyrope garnets were the most abundant (65.6%). Chemical analyses revealed strong similarities to the Drybones Bay and Mud Lake kimberlites which are situated 50 to >100 km to the northeast, roughly aligned with prominent glacially streamlined landform flowsets in this field area. Results suggest there is little evidence for undetected kimberlite outcrop or sub-crop in the study area.

scholarly journals Evidence for a 200 km thick diamond-bearing root beneath the Central Mackenzie Valley, Northwest Territories, Canada? Diamond indicator mineral geochemistry from the Horn Plateau and Trout Lake regions

2018 ◽  
Vol 112 (S2) ◽  
pp. 719-736
Author(s):  
Stéphane P. Poitras ◽  
D. Graham Pearson ◽  
Matthew F. Hardman ◽  
Thomas Stachel ◽  
Geoff M. Nowell ◽  
...  
Keyword(s):  
Northwest Territories ◽  
Trout Lake ◽  
Indicator Mineral
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