Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 83
STATION 5007
EASTING 568428
NORTHING 6044763
ZONE 14
DATUM NAD83
Date of mapping 06/18/1983
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 62 | 68 | |
fault | 51 | 82 |
PETROLOGIC DATA
Rock Number: 1
-Situation very similar to 5006 - old gneissic, cataclastic leuco-TNLT with agmatized and boudinaged blocks of less deformed charcoal grey granodiorite
-35 cm pegmatite with biotite, potassium feldspar and 5 mm magnetite crystals
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
mafic mineral | biotite | 0.0 | 0.0 | 6.0 | mm |
Mineral | Abundance (%) |
---|
potassium feldspar |
Rock Number: 2
-same as 5006 except plagioclase phenocrysts are absent
-makes up around 10% of exposure
-relationship not as obvious but still looks intrusive into pre-existing gneiss
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit |
---|---|---|---|---|---|
mafic mineral | 0.0 | 0.0 | 15.0 | mm | |
groundmass grainsize | 0.0 | 0.5 | mm |
Manitoba Geological Survey, 2017