Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6136
EASTING   566799     NORTHING   6054865     ZONE   14     DATUM   NAD83
Date of mapping    06/16/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 236 83

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
schistose
leucocratic

Field Description:

-grey and white intrusive that doesn't really look like a core granite
-shows extensive deformation and assimilation of the sedimentary rocks
-boudinage of nebulus TL as a trace mineral uniformly distributed but may be derived from the sediment
-grain size variable
-inclusions pegmatitic

Minerals of Note
Mineral Abundance (%)
tourmaline
biotite
muscovite

Rock Number: 2

Rock Type: sandstone
Descriptors:
feldspathic

Field Description:

-highly assimilated inclusions often reduced to simple MV schlieren of the light grey feldspar-rich arkosic sandstones
-no sedimentary structures recognizable

Minerals of Note
Mineral Abundance (%)
muscovite
sillimanite


Manitoba Geological Survey, 2017