Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5021
EASTING 567955 NORTHING 6043437 ZONE 14 DATUM NAD83
Date of mapping 06/19/1983

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
metamorphic layering | 11 | 66 |

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 11 | 66 |

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
layered
volcanic derived
epidosite
possibly pillowed
Field Description:

-looks like extrusive pillowed basalt
-lots of epidote-hornblende pods

Minerals of Note
Mineral | Abundance (%)
epidote
garnet
hornblende

Rock Number: 2

Rock Type: gabbro
Descriptors:
massive
mesocratic
greater than 4 metres wide
deformed
quartz feldspar veins present
east of rock 1
Field Description:

-3 to 4 m exposed to waterline east of amphibolite and pegmatite
-deformed with injected veinlets of quartz-feldspar; not Molson

Textural Features
Type | Mineral | Min. Size | Max. Size | Abundance (%) | Unit
mafic mineral | hornblende | 0.0 | 0.0 | 55.0 | mm

Rock Number: 3

Rock Type: pegmatite
Descriptors:
2 metres wide
graphic felspars present
Field Description:

- 2 m. dike
- graphic microcline (3-20 cm)
- tourmalines
-1 x 6 cm biotite books
- cut by westerly fracture cleavage

Minerals of Note
Mineral | Abundance (%)
tourmaline
biotite
garnet

Manitoba Geological Survey, 2017