Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    83     STATION    5152
EASTING   575729     NORTHING   6049133     ZONE   14     DATUM   NAD83
Date of mapping    07/20/1983

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
schistosity 256 88

Linear Structures
Type Plunge Azimuth
microcrenulation 66 72

DIKE ANDERSON A-91

-local magnetic anomaly-24 degree variation in compass when 2" from outcrop to 3' above

PETROLOGIC DATA

Rock Number: 1

Rock Type: basalt
Descriptors:
pillowed

Field Description:

-dominantly highly stretched pillows with minor intermediate volcaniclastic sediments up to 1 m. thick
-dike intrusive into pillow unit only
-** sample of main dike contact for thin section to check for exomorphic effect

Rock Number: 2

Rock Type: pegmatite

Field Description:

-tourmalinized margin
-moderate to heavy shearing in foliation
-minor beryl in largely clevelandite+microcline+quartz
-quartz strung out in foliation plane and highly shattered
-small tourmalinized inclusions strung out in foliation plane
-potassium feldspar dark blue grey

Minerals of Note
Mineral Abundance (%)
beryl
cleavelanditic albite


Manitoba Geological Survey, 2017