Cross Lake Project (1983-86)

Geologist P.G. Lenton Year 83 STATION 5158
EASTING 575986 NORTHING 6048206 ZONE 14 DATUM NAD83
Date of mapping 07/20/1983

STRUCTURAL DATA

PETROLOGIC DATA

Rock Number: 1

Rock Type: pegmatite
Field Description:

DIKE A-3
-podiform dike with maximum width of 322 cm and minimum of 87 cm
-exterior zones well defined
-exomorphic .5 to 1 cm of intense tourmineralization
-border zone--aplite and tourmaline 5 mm
-well zone; 2-12 cm, clevelandite+/-quartz, garnet, tourmaline
Upper intermediate zone
-core 63 cm, coarse quartz stringers in clevelandite, minor microcline,tourmaline,garnet, beryl
CORE ZONE
-quartz poor--some small quartz masses up to 200m
-mainly blocky mottled pink and grey microcline with spodumene and beryl
-symmetrical on other side
-trend of dike 246 degrees
- 287/77 in country rock - grey pebbly psammite, fol. penetrative into dike
-sample of vein of fine grained albitized material with tourmaline and spessartines
-thin section for opaques

Manitoba Geological Survey, 2017