Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6318
EASTING   566239     NORTHING   6048181     ZONE   14     DATUM   NAD83
Date of mapping    07/09/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 29 77

Linear Structures
Type Plunge Azimuth
rodding 43 23

PETROLOGIC DATA

Rock Number: 1

Rock Type: amphibolite
Descriptors:
cataclastic
basaltic composition

Field Description:

-tectonically layered, black-HB rich
-numerous epidotized pods and veins
-muggy, rusty, gosen patches
-compostional and textural variations across the outcrop
-some layers have 2 to 4 mm rectangular epidote masses disseminated thru it
-this may have been an altered plagioclase prophyric basalt

Minerals of Note
Mineral Abundance (%)
garnet
epidote

Rock Number: 2

Rock Type: pegmatite

Field Description:

-white modelled with pink
-fairly quartz poor, microcline-rich PGMT
-folded and baudinaged
-contains rare disseminations of blood red GR,
-no MG or peristerite noted

Minerals of Note
Mineral Abundance (%)
garnet
biotite


Manitoba Geological Survey, 2017