Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5656
EASTING 570005 NORTHING 6038549 ZONE 14 DATUM NAD83
Date of mapping 07/25/1984

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 53 | 78 |

Dikes and Sills:
Rock Number | Type | Width (m) | Strike | Dip
0 | Molson dike | 0.00 | 53 | 78

PETROLOGIC DATA

Rock Number: 1

Rock Type: tonalite
Descriptors:
schlieric or schlieren present
leucocratic
Field Description:

-typical pink and grey CWB complex
-minor intrusion of the old grey PORY

Rock Number: 2

Rock Type: norite
Descriptors:
layered
orthopyroxene bearing
Field Description:

-major league size Molson dike
-50 m exposed to south edge of swamp
-unit is still coarse at the end of the outcrop so there is probably at least 20 m not exposed in the swamp
-coarse leuco-norite in the centre shows typical cumulate layering and is quite rich in MG
-there is a minor dike about 10 cm thick south of contact that is non magnetic
-there are numerous minor mylonite shears in the centre of the body
-there is probably some preserved OPX
-SAMPLE B is chill margin

Minerals of Note
Mineral | Abundance (%)
magnetite

Manitoba Geological Survey, 2017