Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 84 STATION 5544
EASTING 566778 NORTHING 6056254 ZONE 14 DATUM NAD83
Date of mapping 07/06/1984

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 45 | 68 |

Linear Structures
Type | Plunge | Azimuth
S-intersection | 58 | 94

PETROLOGIC DATA

Rock Number: 1

Rock Type: sandstone
Descriptors:
cataclastic
feldspathic
Field Description:

-highly sheared with mylonite zones up to 35 cm wide
-MV blasts smeared on the foliation plane
-thin 10 to 40 cm siliceous quartzite beds
-primary layering was probably at a fairly high angle to the shearing and is completely disrupted
-scattered diopsitic calcsilicate lenses

Minerals of Note
Mineral | Abundance (%)
muscovite

Rock Number: 2

Rock Type: granite
Descriptors:
massive
muscovite and tourmaline bearing
Field Description:

-3 or 4 25 cm dikes and several highly sheared veins of rusty white two mica GRNT
-lacks the porphyritic texture typical in the west channel but is essentially the same unit
-TL grow up to 1 cm in length

Manitoba Geological Survey, 2017