Cross Lake Project (1983-86)


Geologist    P.G. Lenton     Year    86     STATION    6180
EASTING   574765     NORTHING   6045637     ZONE   14     DATUM   NAD83
Date of mapping    06/20/1986

STRUCTURAL DATA

Planar Structures:
Structure type Strike Dip Separation
cataclastic foliation 166 65

PETROLOGIC DATA

Rock Number: 1

Rock Type: granite
Descriptors:
pegmatitic
leucocratic

Field Description:

-classic very coarse to ultracoarse peg. granite
-muscovite randomly distributed as 1 mm x 2 to 5 cm sheaves
-rock is moderatly sheared therefore some zoning is confused and obliterated
-shows classic units very fine grained with pink and white laminations and pin head garnet laminations
-garnets can reach 4 mm in coarser GRNT
-also appears to have BO
-the relationship of this outcrop to CWB or grey porphyry should be checked by analysis

Minerals of Note
Mineral Abundance (%)
garnet
muscovite

Rock Number: 2

Rock Type: amphibolite
Descriptors:
massive
volcanic derived

Field Description:

-volcanic ampb. inclusions in south side of outcrop decreasing north-none or north side


Manitoba Geological Survey, 2017