Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 83
STATION 5013
EASTING 567388
NORTHING 6044041
ZONE 14
DATUM NAD83
Date of mapping 06/18/1983
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
gneissosity | 52 | 51 |
-2 m dike of crudely zoned pegmatite
-biotite only mica
-rough quartz core with large 30 cm blocky microcline surrounded by quartz-microcline pegmatite,
-garnet occurs as small pockets of 1 to 3 mm euhedral blood red crystals
-abundant large magnetite masses (up to 1 x 2 cm)
PETROLOGIC DATA
Rock Number: 1
-augen gneiss much as previously
-most pegmatitic matierial restricted to foliation plane
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
mafic mineral | 0.0 | 0.0 | 5.0 | mm |
Mineral | Abundance (%) |
---|
biotite |
magnetite |
Rock Number: 2
-schlieric rafts and agmatized bodies of younger grey slightly porphyritic granodiorite
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
mafic mineral | biotite | 0.0 | 0.0 | 15.0 | mm |
phenocryst | plagioclase | 0.0 | 0.0 |
Manitoba Geological Survey, 2017