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
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 321 | 46 |
PETROLOGIC DATA
Rock Number: 1
-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