Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5201
EASTING 573265 NORTHING 6056962 ZONE 14 DATUM NAD83
Date of mapping 08/07/1983

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 142 | 80 |

-contact between granite and sediments
foliation parallels contact

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
porphyritic
biotite - muscovite bearing
Field Description:

-strongly feld. porphyritic with no quartz phenocrysts
-not much muscovite (<1%)
-now a light grey colour
-Possible contamination by assimilation although the contact with country rocks is razor sharp although it wanders according to joint pattern in supracrustals

Minerals of Note
Mineral | Abundance (%)
magnetite

Rock Number: 2

Rock Type: conglomerate
Field Description:

-also sandstone

Manitoba Geological Survey, 2017