Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6134
EASTING 557245 NORTHING 6024385 ZONE 14 DATUM NAD83
Date of mapping 06/15/1986

STRUCTURAL DATA

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
porphyritic
biotite
Field Description:

-diff. text characteristic than seriate GRDR appears to be roughly true porphyry with phenocrysts of MC up to 6 cm long
-strongly resembles the porphyritic GRDR at Jenpeg Fore Bay -highly schlieric with an abundance of inclusions
-1 large raft 4x1 m of coarse peg. white GRDR with 30% agmatite blocks of leucogabbro (in some on included blocks appears layered with variations in HB and QZ content)
-also, tectonic foliated and deformed before included in white GRDR which is included in pink porphyritic GRDR
-foliations are randomly orientated within the raft
-sample 1A porphyritic GRDR
-sample 1B gabbro
-sample 1C white GRDR

Manitoba Geological Survey, 2017