Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6213
EASTING 570213 NORTHING 6047902 ZONE 14 DATUM NAD83
Date of mapping 06/23/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 294 | 68 |

Linear Structures
Type | Plunge | Azimuth
rodding | 37 | 99

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
massive
biotite
Field Description:

-as at previous station leucocratic grey and beige fine grained homogeneous equigranular intrusive
-fabric is not strongly developed, has numerous veinlets of coarsed pegmatitic pink GRDR intruding mainly parallel to the foliation
-it appears to have two feldspars, but pink feldspar, presumable microcline is subordinate so the composition is probably on the GRDR-TNLT boundary
-there are many inclusions and a few schlieren
-felsic inclusions are generally nebulitic

Rock Number: 2

Rock Type: amphibolite
Field Description:

-one massive featureless inclusion, 1.5 x 5 m
-rock looks fine grained intrusive except the weathering surface show unusual flattened deformed mafic aggregates that look like the formed clasts
-there are also small flattened ovoid quartz-feldspar masses with concentric structure that look like amygdules
-this could have been a volcanic of some sort

Manitoba Geological Survey, 2017