Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 86
STATION 6228
EASTING 560672
NORTHING 6034025
ZONE 14
DATUM NAD83
Date of mapping 06/25/1986
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
cataclastic foliation | 34 | 43 |
PETROLOGIC DATA
Rock Number: 1
-same leucocratic mod. foliated intrusive with dark smokey quartz
-occurs on south side of island
Rock Number: 2
-central and north part of island
-highly sheared and some places mylonitic and compress coarse red granite and peg.
-abundance of grey mafic TNLT inclusions
-pegmatitic GRNT contains disseminated red garnet and layered garnet aplite
-zone relations unknown
-outcrop is chopped up in shear fabric
-mafic TNLT inclusions are unidentifiable (supracrustal or intrusive)
-few identifiable gabbro-diorite inclusions
-schlieren are numerous particularly between aplite layers
-many inclusions are reduced to ghost schlieren
-this leuco GRNT maybe derived or associated with the leucoGRDR of previous station
-probably part of Minago Group or similar chemistry
Mineral | Abundance (%) |
---|
garnet |
tourmaline |
magnetite |
Manitoba Geological Survey, 2017