Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    85     STATION    6037
EASTING   576630     NORTHING   6044510     ZONE   14     DATUM   NAD83
Date of mapping    06/14/1985

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 342 45

Dikes and Sills:
Rock Number Type Width (m) Strike Dip
0 pegmatite 0.00 295 52

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
augened
biotite

Field Description:

-since last station gradual increase in mafics and in grain size
-also, slows increase in inclusions, now recognizable, at least as supracrustals
-gradual increase in number and size of pegmatites that appear as swarm

Rock Number: 2

Rock Type: pegmatite

Field Description:

-swarm of parallel pegs, KF rich and quartz poor with black mafic clots that appear to be BO and CL(?)
-SEE SAMPLE
-there is some shearing on dike margins and movement between dikes in counting rock (ie-foliation in GRDR is rotated slightly) so dikes are probably occupying an en echelon fault site.

Minerals of Note
Mineral Abundance (%)
biotite
chlorite


Manitoba Geological Survey, 2017