Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5135
EASTING 575338 NORTHING 6041235 ZONE 14 DATUM NAD83
Date of mapping 07/13/1983

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 41 | 71 |

-original layering direction trends 134 degrees

PETROLOGIC DATA

Rock Number: 1

Rock Type: pegmatite
Descriptors:
cataclastic
granitic
Field Description:

-sheared locally to mylanitic augen gneiss
-traces only of muscovite, tourmaline, garnet
-thin radial sprays of biotite major mafic
-contains many highly deformed inclusions of sediments.
-on east of pegmatite area large semi-continuous amphibolite rafts (layers) that look like massive flows but are medium grained (too coarse?) and may be diorite sills

Minerals of Note
Mineral | Abundance (%)
garnet
muscovite
tourmaline

Rock Number: 2

Rock Type: greywacke
Descriptors:
layered
mafic
Field Description:

-finely laminated mafic to almost amphibolitic greywacke of almost certain proximal volcanic source

Minerals of Note
Mineral | Abundance (%)
hornblende

Manitoba Geological Survey, 2017