Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 86 STATION 6347
EASTING 571019 NORTHING 6050078 ZONE 14 DATUM NAD83
Date of mapping 07/12/1986

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 76 | 88 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
pegmatite
leucocratic
Field Description:

-ultra coarse, BO-PGMT
-MV minor phase
-no GR or TL visable
-large pods of blocky non-graphic microcline up to 50 cm across
-blocky pods are floating in ultra-coarse BO-GRNT containing 15 to 40 cm graphic mega
-rare patches of med. grained GRNT probably analygous to the apatite phase
-very coarse BO is aligned on the SC probably indicating crystallization in the stressed field

Rock Number: 2

Rock Type: sandstone
Descriptors:
bedded
quartz-biotite
Field Description:

-inclusions representing 25 % of exposure of quartz rich BO greywacke
50 to 55 % quartz
-no MV in units
-minor BO selvages 2 mm thick on contacts with PGMT
-SC in inclusions parallels the pegmatite SC
-bedding 30 to 50 cm with some internal layering on cm scale
-generally parallel laminae variety

Manitoba Geological Survey, 2017