Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5210
EASTING 572779 NORTHING 6049088 ZONE 14 DATUM NAD83
Date of mapping 08/18/1983

STRUCTURAL DATA

Layering:
Layering type | Strike | Dip | top Direction
bedding | 96 | 56 |

Planar Structures:
Structure type | Strike | Dip | Separation
schistosity | 98 | 77 |

-see rock 1 for station 5210 for complete structural data

PETROLOGIC DATA

Rock Number: 1

Rock Type: pegmatite
Field Description:

DIKE A11
-Two parallel dikes, max 2.4 m width. Strikes 096/56. Muscovite, quartz, beryl clevelandite, spodumene, microcline secondary muscovite, tourmaline, garnet. Rather massive unzoned appearance, Spodumene mainly concentrated in central regions. Blocky microcline erratic in distribution. Most of dike is replacement alblite mainly in clevelandite form. Spodumene is <1%. Secondary muscovite may be a result of alteration of spodumene during albitization. Beryls are snow white anhedral, averaging .5 to 1 cm. The dike has undergone moderate shearing although the quartz shows post-deformational annealing. Microcline is mottled white grey and orange. Oxides are not obvious. The second dike on the east side is separated by less that a metre of amphibolite. It appears identical and in all probability is the same dike folded around
SCHISTIOCITY ----> 098/77

Manitoba Geological Survey, 2017