INVENTORY FILE NO.
Black Granite (“Winblack”)
The “black granite” is a border phase of the Archean or Proterozoic
Falcon Lake Stock. Actually a diorite, the dark colour is due to the greater
translucency of the plagioclase than that of normal diorite, and the resulting
absorption of light by black biotite and hornblende. Minor amounts of sulphides
are present in the diorite.
MINERALS OR PRODUCTS OF VALUE
EXPLORATION AND DEVELOPMENT
The “black granite” quarry is located immediately west of the “old”
road joining West Hawk and Falcon Lakes, approximately 1½ miles west of the
village of Westhawk Lake.
The 40 acre property was staked by L. H. Sprange
(Q.C. W17) in 1937, leased for 10 years by him (M38) in 1944 and for 10 years by
his sons (M113) in 1954. The first pit, opened in about 1938, contained an
excessive amount of sulphides. A new quarry was opened where the sulphide
content was lower. Monumental and decorative building stone under the name
“Winblack granite” were produced up to 1952 and in 1964 the lease was cancelled.
The stone was apparently produced in the name of the Winnitoba Marble Company
Limited, but marketed by the Memorial Marble and Tile Company, Limited. Both
companies were owned by the Spranges.
In 1965 N. Saroka (Q.C. W1194) restaked
the north half of the property (19.9 acres), but in 1966 he assigned all
interest to the Norlica Minerals Ltd. No work was reported and the permit was
cancelled in 1971.
An adjacent 40 acre claim in Sec. 8 was staked by I. P.
Kahlert (Q.C. W624) in 1961 for the Cold Springs Granite (Canada) Limited, in
order to determine if granite of good quality is present in sufficient volume to
warrant a commercial operation. The permit was cancelled in 1963 when it was
learned that the Hudson Bay Company held the rights to all minerals except gold
and silver on the property.
Some production figures:
10 tonnes (samples)
NOTE: The record of production for the
early years is incomplete because these were not recorded. In the later years,
the quarry was usually inactive.
Annual Report On Mines and Minerals; 26th – p. 90; Manitoba Mines
Black Granite; File No. 23877 in Mining Recording Files, Manitoba
Brownell, G.M., 1941: Monument and Building Stone; Trans.
C.I.M. & M., v. 44, p. 250 .
Carr, G.F., 1955: The Granite Industry of
Canada; Industrial Minerals Division, Report 846, p. 155-56 Mines Branch,
Davies, J.F., 1953: West Hawk Lake-Falcon Lake Area; Publication
53-4, p. 6-7; Manitoba Mines Branch.
Mineral Resources Division; Resource
File: Hawk Lake Granite Quarry, Manitoba, by L. H. Cole.
1952: Geology of the Rennie-West Hawk Lake Area, Manitoba; Publication 50-6, pp.
23-24, Manitoba Mines Branch.
Map 52E/11, East, Waugh (Topography), Scale 1:50 000.
Waugh (Aeromagnetic), Scale 1” = 1 mile.
Map 50-6, Rennie-West Hawk Lake Area
(Geology), Scale 1” = l mile - Accompanying Report by Springer (1952).
53-4, West Hawk Lake-Falcon Lake Area (Geology), Scale 1” = 1,000’ –
Accompanying Report by Davies (1954).
Claim Map Series NE11, 52E, Scale 1:31
680, circa 1964, Mining Recording, Manitoba Mines Branch.