Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5023
EASTING   568178     NORTHING   6043039     ZONE   14     DATUM   NAD83
Date of mapping    06/20/1983

STRUCTURAL DATA

Layering:
Layering type Strike Dip top Direction
bedding 291 83

Linear Structures
Type Plunge Azimuth
microcrenulation 82 52

-pitches 87 degrees E in layering

PETROLOGIC DATA

Rock Number: 1

Rock Type: sediments / sedimentary schist
Descriptors:
finely laminated
mafic
gossaned
volcaniclastic

Field Description:

-finely laminated hornblende-epidote amphibolite (at higher grade would be identical to Kissynew "marker" amphibolite)
-Volcanic derived-probable tuff/wacke volcaniclastic
-60 m zone of parallel narrow rusty gossans

Minerals of Note
Mineral Abundance (%)
garnet
epidote
hornblende

Rock Number: 2

Rock Type: tonalite
Descriptors:
cataclastic
leucocratic
shears present or common
50 % pegmatitic lit
rafts or inclusions present
sericitized
augened
boudinaged

Field Description:

-around 50% pegmatite with discrete augen shear zones. Large rafts of mafic sediments
-Highly sericitized shears
-Extensive boudinage that also pinches and disrupts shear fabric

Minerals of Note
Mineral Abundance (%)
garnet
biotite


Manitoba Geological Survey, 2017