Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 86
STATION 6126
EASTING 559199
NORTHING 6025710
ZONE 14
DATUM NAD83
Date of mapping 06/14/1986
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 305 | 54 | |
schistosity | 49 | 67 |
Rock Number | Type | Width (m) | Strike | Dip |
---|---|---|---|---|
0 | vein | 0.00 | 46 | 87 |
-monomineralic blue grey quartz vein
-PHOTOS 1,2,3 --> pegmatite (general)
PETROLOGIC DATA
Rock Number: 1
-seriate GBBR
-slightly schlieric with inclusions of the old MCSG
-quartz conten 30%, decrease in megacryst content
-distribution of megacrysts is patchy with a range of 5 to 20%
-sample taken
Rock Number: 2
-pegmatite
-sample taken
-swarm of late pink peg. showing little penetrative fabric slightly anastomosing with a 235 trend and variable mod. dips contp-->distinctly perialuminous
-discontinous zonation is present but poorly developed quartz content low; aggregate content 15% with local development of central pods, microcline, pink with grey modelling
-muscovite>biotite
-garnet abundant as accessory as is euhedral and skeletal tourmaline
-dike margins--> medium grained-aplitic with garnet laminations and aug. 5 cm
-internal zones packed microcline and minor quartz biotite muscovite
-core zone is large euhedral MC+QZ+tourmaline-musc.
-mabe advanced minago series(?)
Manitoba Geological Survey, 2017