Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6577
EASTING 568777 NORTHING 6042876 ZONE 14 DATUM NAD83
Date of mapping 08/09/1986

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
metamorphic layering | 297 | 68 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
layered
volcanic derived
Field Description:

-Highly tectonized, re-crystallized, volcanic derived ampb
-the units are completely transposed and tectonized but appear to be volcanic and not Sed.
-GR is sparatic
-there is extensive alteration of HB to BO, EP
-there are a few quartz veins, one sampled appears to have coarse grains of IM (sample B)
-there is local intense HB-BO alteration that appears to be tectonically controlled and is most evident in baudinage

Minerals of Note
Mineral | Abundance (%)
garnet
IM

Rock Number: 2

Rock Type: amphibolite
Descriptors:
massive
ultramafic composition
Field Description:

-One baudinage layer around 1 x 2 m of dark green actinolite-mafic rock
-there is no layering in it
-it appears to correspond to the foliation plane but this is unlikely to be a primary volcanic bedding plane
-this probably represents a mafic dike or sill

Manitoba Geological Survey, 2017