Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5010
EASTING   568003     NORTHING   6044671     ZONE   14     DATUM   NAD83
Date of mapping    06/18/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
gneissosity 45 34

Dikes and Sills:
Rock Number Type Width (m) Strike Dip
2 pegmatite 0.20 314 71

PETROLOGIC DATA

Rock Number: 1

Rock Type: tonalite
Descriptors:
gneissic
porphyritic

Field Description:

-as previous on this side of bay < 1% feldspar megacrysts 3 - 15 mm??

Textural Features
Type Mineral Min. Size Max. Size Abundance (%) Unit
mafic mineral 0.0 0.0 6.0 mm
phenocryst plagioclase 15.0 3.0

Rock Number: 2

Rock Type: pegmatite
Descriptors:
granitic

Field Description:

-2 feldspar biotite pegmatite
-Massive, no zoning and slightly deformed by foliation plane

Minerals of Note
Mineral Abundance (%)
biotite
plagioclase
potassium feldspar


Manitoba Geological Survey, 2017