Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5182
EASTING 576416 NORTHING 6045722 ZONE 14 DATUM NAD83
Date of mapping 08/04/1983

STRUCTURAL DATA

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 321 | 46 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: volcanic rock
Descriptors:
schistose
mafic
Field Description:

-highly deformed mafic rock-strange textures; both laminated and the epidosite texture usually associated with pillowed units
-samples of snow white feldspar (probably microcline) with large blades of possible ilmenite
-strange boudinaged dike of feldspar with little quartz
Speculation
X-ray confirmed the large blades and seams of oxide are ilmenite. The feldspar appears to be plagioclase. Quartz is present but not common. This pegmatite is "on strike" to the gabbro - anorthosite complex on Pipestone lake. This may be an anorthosite pegmatite with ilmenite seams reflecting the Pipestone chemistry.

Manitoba Geological Survey, 2017