Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 86
STATION 6173
EASTING 574352
NORTHING 6044551
ZONE 14
DATUM NAD83
Date of mapping 06/20/1986
STRUCTURAL DATA
PETROLOGIC DATA
Rock Number: 1
-gabbro norite approaching norite some erratic comp. layering appears to have 3 forms of mafics
1) black HB, equant-euhedral up to 4mm probably Di
2) black HB with rusty hematitic cores and equant tub to barrel shaped possibly alteredl OL.
3) 3 to 4 cm circular aggregates of greenish grey fibrous trem. probably okiocrystic En.
-plag. is interstitial and included in OPX
-rock is unfoliated but shows some slight shearing on 050 fractures
-discontinuous layer variation is marked by sharp tranisitions separating divergent mafic contens and grain size texture
-probably represents thermal gravitational convection boundaries
-this dike is poorly exposed but texture and outcrop position would suggest a dike between 30 and 40 m wide
-outcrop dike would fall into the High-MG population
Manitoba Geological Survey, 2017