Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5026
EASTING   568628     NORTHING   6042742     ZONE   14     DATUM   NAD83
Date of mapping    06/20/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 309 61

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
layered
volcanic derived
40 % pegmatitic lit to sills
possible flow

Field Description:

-much areas laminated, more extrusive looking amphibolite
-large 30x50 cm pods of hornblende-epidote
-exposure around 40% injected matierial-mostly pegmatitic sith same aplitic veins

Minerals of Note
Mineral Abundance (%)
hornblende
epidote

Rock Number: 2

Rock Type: tonalite
Descriptors:
gneissic
leucocratic
dike
1 to 2 metres wide
sheared
cataclastic

Field Description:

-1 to 2 m dikes of sheared leuc. TNLT
-typical old gneissic unit
-cataclastic character very evident in gneiss but not in amphibolite


Manitoba Geological Survey, 2017