Cross Lake Project (1983-86)
Geologist P.G. Lenton
Year 84
STATION 5643
EASTING 569195
NORTHING 6048742
ZONE 14
DATUM NAD83
Date of mapping 07/23/1984
STRUCTURAL DATA
Structure type | Strike | Dip | Separation |
---|---|---|---|
schistosity | 271 | 67 |
Type | Plunge | Azimuth |
---|---|---|
mineral lineation | 56 | 69 |
PETROLOGIC DATA
Rock Number: 1
-same rock as previously called mafic greywacke but here texture better preserved and lithic fragments can be recog.
-these appear to be massivly bedded, there are numerous HB bearing feldspathic aggre. that may be remnant of felsic interbeds or an odd type of alteration assoc. of calc. silicate development
Mineral | Abundance (%) |
---|
hornblende |
biotite |
tourmaline |
Rock Number: 2
-slightly podded, possibly folded mass of peristerite pegmatite
-generally constrained to the foliation, containing highly irregular contacts composed of persterite, tourmaline, perthitic microcline, blue green apatite, and quartz
-relativly quartz poor peg.
-dike varies from 17 m to less than 1 m
-it is foliated and locally sheared, textural variation is prominent, but the body is not coherently zoned
Manitoba Geological Survey, 2017