Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 85 STATION 6068
EASTING 575509 NORTHING 6044407 ZONE 14 DATUM NAD83
Date of mapping 06/20/1985

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 335 | 40 |

Linear Structures
Type | Plunge | Azimuth
boudin axis | 30 | 86

PETROLOGIC DATA

Rock Number: 1

Rock Type: greywacke
Descriptors:
layered
Field Description:

-layers of mafic HB-BO wacke and felsic quartz rich sandstone
-mafic wack is near ampb with 15 to 25 % mafics
-quartz poor it is a feldspathic wacke
-weathers dark brownish black with charocoal fresh surface--some HB crystals in feldspathic segregations
-minor TL to 3 to 4 mm
-quartz rich layers are laminated on cm scale and are quartz rich, feldspar poor, leucocratic (CI=1-2) and weather beige with blue grey fresh surface
-extensive PG on cross fraction??

Minerals of Note
Mineral | Abundance (%)
hornblende
tourmaline

Rock Number: 2

Rock Type: granite
Descriptors:
pegmatitic
leucocratic
Field Description:

-pink coarse granitic layers with irregular peg. pods and isolated large KF megacrysts
-show extensive baudinage

Minerals of Note
Mineral | Abundance (%)
tourmaline

Manitoba Geological Survey, 2017