Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    84     STATION    5619
EASTING   578458     NORTHING   6067005     ZONE   14     DATUM   NAD83
Date of mapping    07/19/1984

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
gneissosity 297 59

-EBB and Flow Rapids-->one way passage only

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
gneissic
hornblende - biotite bearing

Field Description:

-good GS developed with discrete segregations approx. 1 to 2 mm thick of HB and BO
-quartz has dropped to 25 to 30 % abundant ejected pegmatite all appear to be primative
-potassic quartz poor BO peg.

Minerals of Note
Mineral Abundance (%)
magnetite

Rock Number: 2

Rock Type: amphibolite
Descriptors:
massive
hornblende bearing

Field Description:

-a variety of massive coarse and fine grained AMPB that could be either VOLC or intrusive
-probably some of both
-there have been no felsic or clastic inclusions noted so far today


Manitoba Geological Survey, 2017