Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5524
EASTING 568462 NORTHING 6051564 ZONE 14 DATUM NAD83
Date of mapping 07/01/1984

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
bedding | 281 | 80 |

-photos
- 1 to 3 contact of Molson dike
- 4 cumulate layered zone of Molson
- 5 to 7 faserkeisel beds with ST in CORE and GR in core

PETROLOGIC DATA

Rock Number: 1

Rock Type: sandstone
Descriptors:
layered
semipelitic
Field Description:

-feldspathic sandstones with MV, GR
-very large knots of SM and/or PG and/or MV containing MV or ST or GR or TL m centres
-some may be large PG-QZ knots
-not same unit as across channel
-numerous pegmatitic stringers and quartz stringers parallel to foliation and layering
-numerous minor S folds with very shallow around 10 degree, plunge around 267 degrees

Minerals of Note
Mineral | Abundance (%)
staurolite
sillimanite
muscovite

Rock Number: 2

Rock Type: wacke
Descriptors:
massive
amphibolite
Field Description:

-18 m of HB blastic amphibolitic sed. similar to #5522
-vague lamination for 20 cm near contact, otherwise massive

Rock Number: 3

Rock Type: gabbro
Field Description:

-large Molson dike running parallel to shore at 205/54
-approximately 10 m exposed to water line
-unusual in that this body is highly magnetic
SAMPLE
A -chilled contact
B -magnetite gabbro around 5 metres up
C -cumulate layered with DP, OPX, Mag. and poss. olivine pseudomorphs

Minerals of Note
Mineral | Abundance (%)
enstatite
magnetite
diopside

Manitoba Geological Survey, 2017