Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6576
EASTING 567971 NORTHING 6042575 ZONE 14 DATUM NAD83
Date of mapping 08/09/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 352 | 77 |

-the early CT foliation and MT layering is folded about a weak 050 direction without a recognizable penetrative fabric
-there are late PGMT-MC rich with BO which conforms to the 050 direction

PETROLOGIC DATA

Rock Number: 1

Rock Type: multi-component schlieric gneiss
Field Description:

-Unusual rock that I am not familiar with
-normal CWP camp GRDR is a minor constituent of the outcrop intruding an old grey gneiss
-this old gneiss is dominantly seriate-GRDR to TNLT
-it comprises of fine 0.5 mm grey matrix with around 5% BO containing MC-MEGA from 2mm up to 3 cm, but only 5 to 6%
-the rock is schlieric, layered by early veining which is now highly deformed, now containing inclusions of Ampb and one very odd inclusion of HB-TNLT
-this has 10 to 15 % Quartz and 10 % glassy black HB up to 8 mm
-this outcrop seems to be fairly unique and is not particularly like other CWB occurances or like anything on Kissketogasu.
-the closest match andis recalled is the grey TNLT with EP that occurs with unit 9D in the immediate vacinity of Jenpeg

Minerals of Note
Mineral | Abundance (%)
epidote

Manitoba Geological Survey, 2017