“THE HANGINGWALL ROCKS. THIS APPEARS TO GE A ZONE OF IMBRICATING

FAULTS AND SHEARS, WHICH LIMITS THE ORE TO THE SOUTH AND IHPARTS A

SOUTHEASTERLY RAKE TO THIS END OF THE ORESODY. Ivy tS PROGABLY POST—

ORE, BUT 1S CONSIDERED TO SE A ZONE OF SMALL ADJUSTING MOVEMENTS
RATHER THAN A MAJOR FAULT. ON THE SURFACE, IT CONTAINS SHEARED
LONG FIBRE. UNDERGROUND, ON TwO LEVELS, THE ORE ENDS SHORTLY
BEFORE THE ZONE 1S REACHED AND THE SERPENTINE ENDS ABRUPTLY AT
SMOOTH, SLICKENSIDED FAULT PLANES, FOLLOWED BY AT LEAST 30 FEET

OF GRAPHITIC GOUGE, EVIDENTLY DERIVED FROM THE BLACK ARGILLITES

orf THE SytvesTeR Group.

e) Interna Structure

.

WITHIN THE OREBODY, THE MOST IMPORTANT ORE CONTROL IS
THE RELATIVE COMPETENCY OF THE SERPENTINE. THE ORE OCCURS AS FRAC=
TURE FILLINGS, CHIEFLY ALONG JOINTS, !1N A LIGHT GREEN MASSIVE
“SERPENTINE WITH A BLOCKY FRACTURE. THE SERPENTINE HAS A STRONG
TENDENCY TO BE SHEARED ALONG ITS MARGINS. WHERE !T EXISTS AS ORLY
A NARROW ZONE TO THE SOUTH OF THE GREBODY, IT 1S COMPLETELY SHEARED.
THE SHEARED ZONES ARE EITHER BARREN OR CONTAIN ONLY MINOR SHORT
FIBRE. THEY ARE ALSO CHARACTERIZED BY THE DEVELOPMENT OF TALC AND

PICROLITE AND MAY CONTAIN CONSIDERABLE MAGNETITE AND MAGNESITE.

THE MASSIVE SERPENTINE 1S CUT 8Y NUMEROUS SHEARS, RANGING
UP TO FORTY FEET IN WIDTH. IN GENERAL, THEY STRIKE’ NORTHERLY WITH
MODERATE DIPS TO THE EAST. THE SPACING VARIES BUT IT IS RARE TO
FIND A wioTH OF 100 FEET FREE OF SHEARING. THIS HAS HAD THE EFFECT
OF SLICING THE OREBODY INTO A NUMBER OF MASSIVE BLOCKS WITH WELL

OEVELOPEOD SYSTEMS OF CONJUGATE JOINTS, MOST OF WHICH CONTAIN LONG,