Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5144
EASTING 575187 NORTHING 6040736 ZONE 14 DATUM NAD83
Date of mapping 07/15/1983

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
gneissosity | 55 | 84 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: greywacke
Descriptors:
cataclastic
hornblende - biotite bearing
Field Description:

-dark grey mafic rock heavily injected with aplite veins and then sheared beyond recognition.
-now is hornblende-biotite gneiss with numerous aplite augen and boudins

Minerals of Note
Mineral | Abundance (%)
garnet

Rock Number: 2

Rock Type: aplite
Descriptors:
pegmatitic
Field Description:

-odd textured 3 m. sill of red granitic aplite with scattered blocky microcline and 2 - 10 cm tourmaline
-patches of true pegmatite distributed almost randomly across body

Minerals of Note
Mineral | Abundance (%)
garnet
biotite

Manitoba Geological Survey, 2017