Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6560
EASTING   573066     NORTHING   6041474     ZONE   14     DATUM   NAD83
Date of mapping    08/08/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 49 75

Dikes and Sills:
Rock Number Type Width (m) Strike Dip
0 Molson dike 0.00 231 77

PETROLOGIC DATA

Rock Number: 1

Rock Type: multi-component schlieric gneiss

Field Description:

-highly variable dominantly old augen TNLT
-deformation extreme
-GRDR along contact of large Molson is leuco with equant feldspars in a quartz matrix
-this resembles WJC

Rock Number: 2

Rock Type: diabase

Field Description:

-Molson (major)
-probable width 20 to 25 m but only 20 to 22 m are exposed
-foliation is quite strong and also strong fracture set at 306 degree/87 degrees that has extensive alteration along it and it shows a consistent trend but highly variable dips.
-this dike is unusual in that it has included large xenoliths of CR, the largest 2 x 8 m and several small inclusions that show some thermal effect, predominantly bleaching and marginal assimilation

Minerals of Note
Mineral Abundance (%)
magnetite


Manitoba Geological Survey, 2017