Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5091
EASTING   572840     NORTHING   6039878     ZONE   14     DATUM   NAD83
Date of mapping    07/07/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 61 61

-040/55 footwall contact of Molson

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
augened
biotite

Field Description:

-augen feldspar megacrysts up to 4 mm represent 50 to 60 % of rock
-1 cm siliceous hornfels on Molson contact, otherwise apparently unaffected.
-intruded in Molson near contact
-no inclusions in GRDR away from dike - homogeneous sheared gneiss

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
mafic mineral 0.0 0.0 10.0 %

Rock Number: 2

Rock Type: gabbro

Field Description:

-Molson footwall sequence
-dominantly 2 pyroxene leuco gabbro
-sample of gabbro pegmatite


Manitoba Geological Survey, 2017