Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5185
EASTING 573814 NORTHING 6057276 ZONE 14 DATUM NAD83
Date of mapping 08/05/1983

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
cataclastic foliation | 354 | 87 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
porphyritic
biotite - muscovite bearing
Field Description:

-20 %, 5 to 7 mm, pink feldspar phenocrysts, roughly equant although they are slightly rolled in the foliation
-numerous minor mylonitic zones where closely spaced extension zones where closely spaced extension zones have formed between the shear planes, with intoduction of quartz in the low pressure zones
-muscovite is very fine grained, probably represents around 1 % of rock
-the shear fabric appears to be parallel to the dominant schistocity

Minerals of Note
Mineral | Abundance (%)
magnetite

Manitoba Geological Survey, 2017