Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5197
EASTING   573597     NORTHING   6057488     ZONE   14     DATUM   NAD83
Date of mapping    08/07/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 183 83

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
porphyritic
biotite - muscovite bearing

Field Description:

-bright red weathering, significantly less magnetite than previously
- porphyritic texture is not as obvious but still exists with feldspar and muscovite phenocrysts
-numerous quartz veins containing massive black microcrystalline tourmaline
-vein boundaries show a marked degree of pinking, probably due to oxidation of the magnetite in the granite

Minerals of Note
Mineral Abundance (%)
magnetite


Manitoba Geological Survey, 2017