Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 85 STATION 6004
EASTING 576315 NORTHING 6045420 ZONE 14 DATUM NAD83
Date of mapping 06/07/1985

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 295 | 47 |

-distinguishing characteristics have been reduced to FL, lower QZ, and higher mafic content for the grey porphyry

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
augened
biotite-feldspar rich
Field Description:

-General appearance-has much of textural characteristics of pink granite but is more mafic with a uniform grey color.
-quartz has decreased to around 25 % with an increase in size and abundance of microcline augens.
-Fl content highest noted to date
-probably represents grey porphyry even though groundmass is coarser than previously noticed. There are numerous small highly flattened, fine grained inclusions probably of supracrustals
-metasomatism is evident as the commonly contain feldspar phenocrysts.

Manitoba Geological Survey, 2017