Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5476
EASTING   577696     NORTHING   6061524     ZONE   14     DATUM   NAD83
Date of mapping    06/27/1984

STRUCTURAL DATA

PETROLOGIC DATA

Rock Number: 1

Rock Type: gabbro
Descriptors:
massive
hornblende bearing

Field Description:

-whole island is massive featureless fine grained gabbro
-no discernable fabric but I think that the unit is not a Molson
-it is cut by veins of quartz and quartz feldspar
-has strong joint patterns
-may be Molson but should be thin sectioned to be sure

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
mafic mineral 0.0 0.0 45.0 %
groundmass grainsize 0.0 0.5 mm


Manitoba Geological Survey, 2017