Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6342
EASTING 570906 NORTHING 6050962 ZONE 14 DATUM NAD83
Date of mapping 07/10/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 34 | 74 |

Linear Structures
Type | Plunge | Azimuth
ptygmatic axis | 67 | 28

-sudden transition across small bay to quartz rich sands

PETROLOGIC DATA

Rock Number: 1

Rock Type: sandstone
Descriptors:
bedded
quartz-biotite
Field Description:

-grey weathering sands-55 to 60 % quartz
-rare GR
-beds are 30 to 50 cm thick
-very little internal lamination, no grading visable
-no cross beds
-all MV knot layers ended
-CLCC layers still present but average 1 to 2 m thick and rare
-which point is one large antiform plunging to NE
-core of fold invaded by 6 m dike of pegmatite

Minerals of Note
Mineral | Abundance (%)
garnet

Rock Number: 2

Rock Type: pegmatite
Field Description:

-pegs have also changed into BO>MV, rare TL and GR and large graphic MC
-wall foliated

Minerals of Note
Mineral | Abundance (%)
garnet
tourmaline
biotite
muscovite

Manitoba Geological Survey, 2017