P. Lenton: Cross Lake Project (1983-86), Station 5010

Cross Lake Project (1983-86)

Geologist    P.G. Lenton     Year    83     STATION    5010
EASTING   568003     NORTHING   6044671     ZONE   14     DATUM   NAD83
Date of mapping    06/18/1983

STRUCTURAL DATA

Planar Structures:

Structure type Strike Dip Separation

gneissosity 45 34

**Planar Structures:**
Structure type	Strike	Dip	Separation
gneissosity	45	34

Dikes and Sills:

Rock Number Type Width (m) Strike Dip

2 pegmatite 0.20 314 71

**Dikes and Sills:**
Rock Number	Type	Width (m)	Strike	Dip
2	pegmatite	0.20	314	71

PETROLOGIC DATA

Rock Number: 1

Rock Type: tonalite
Descriptors:
gneissic
porphyritic

Field Description:

-as previous on this side of bay < 1% feldspar megacrysts 3 - 15 mm??

Textural Features

Type Mineral Min. Size Max. Size Abundance (%) Unit

mafic mineral 0.0 0.0 6.0 mm

phenocryst plagioclase 15.0 3.0

**Textural Features**
Type	Mineral	Min. Size	Max. Size	Abundance (%)	Unit
mafic mineral		0.0	0.0	6.0	mm
phenocryst	plagioclase	15.0	3.0

Rock Number: 2

Rock Type: pegmatite
Descriptors:
granitic

Field Description:

-2 feldspar biotite pegmatite
-Massive, no zoning and slightly deformed by foliation plane

Minerals of Note

Mineral Abundance (%)

biotite

plagioclase

potassium feldspar

**Minerals of Note**
Mineral	Abundance (%)
biotite
plagioclase
potassium feldspar

Manitoba Geological Survey, 2017