Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6394
EASTING 563695 NORTHING 6047576 ZONE 14 DATUM NAD83
Date of mapping 07/19/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 39 | 38 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: gneiss
Descriptors:
layered
garnet-biotite bearing
Field Description:

-very unusual rock, comprising of interlayered psammitic textured GR-BO gneiss and white garnet - quartz- plagioclase gneiss
-no indication of original rock although exposure is very poor
-SC is very pronounced with a platy cleavage
-locally red GR represents 20 to 25% of the rock
-it appears that this has gone thru extensive alkali stripping
-BO GNSS also contains trace of fibrous amphibole (this should be checked in TS to see if there is an anthophyllite assemble)
-in general, in appearance the rock has a higher meta. grade than anticipated for this area, probably upper amphibolite

Manitoba Geological Survey, 2017