Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 85 STATION 6019
EASTING 574864 NORTHING 6043859 ZONE 14 DATUM NAD83
Date of mapping 06/10/1985

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 50 | 58 |

Dikes and Sills:
Rock Number | Type | Width (m) | Strike | Dip
0 | vein | 0.00 | 154 | 77

-heavy alteration-potassic- granite goes to pink MC+QZ+MV

PETROLOGIC DATA

Rock Number: 1

Rock Type: granodiorite
Descriptors:
porphyritic
Field Description:

-rock change-grey seriate or bimodal porphyry
-large 1 to 2 cm MC phenos and 3 to 4 mm phenos of plagioclase?(+/-MC)
-looks like (somewhat) grey porphyry but has no visable FL
-grain size down to 0.5 mm
-quartz down to 30 %, BO up 1 % and phenocrysts are larger
-where sheared in augen GRNT
-schlieren and nebulite appearing
-sample B in of potassic alteration veins

Manitoba Geological Survey, 2017