Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5480
EASTING   578333     NORTHING   6062092     ZONE   14     DATUM   NAD83
Date of mapping    06/27/1984

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 228 87

-photos of IRFM

PETROLOGIC DATA

Rock Number: 1

Rock Type: gabbro

Field Description:

-majority of outcrop is fine grained mafic rock--little textural variation, could be massive basalt but I think it is a fine grained phase of the gabbro with alteration veins

Rock Number: 2

Rock Type: iron formation
Descriptors:
banded
silicate facies

Field Description:

-NW edge of outcrop is banded silicate facies iron formation with siliceous layers and layers of massive magnetite
-probably an inclusion sliver on edge of gabbro
-there appear to be inclusion of iron formation in gabbro upto 2 or 3 m from contact


Manitoba Geological Survey, 2017