Dolomite of the lower member of the Middle to Upper Cambrian Jubilee Formation forms a ridge trending north-northwest for 6.3 kilometres along the east side of the Kootenay River, 8.8 to 15.1 kilometres south-southeast of Canal Flats. The dolomite outcrops over widths of up to 750 metres near the centre of the ridge. Bedding strikes 164 to 194 degrees and dips 35 to 50 degrees east.
At the Pond occurrence, six diamond-drill holes near the south end of the ridge, a short distance west of Island Pond, encountered light to dark grey to bluish grey, variably mottled, fine to medium grained dolomite, displaying minor brecciation accompanied by secondary white to pinkish dolomite infilling fractures. Tabular to wavy to lenticular laminae are quite common. In places, the rock becomes more massive with indistinct bedding. Some black to light grey chert lenses and a few irregular blotches and rounded blebs of dark bluish grey chert are present. Vugs encrusted with white dolomite or pink calcite are locally evident.
Two diamond drill holes near the centre of the ridge, some 3 kilometres to the north, cored light to medium grey, to blue-grey, fine-grained, massive to well-laminated dolomite that is extensively brecciated and cemented with white dolomite and white to pinkish calcite.
Drill core from the two areas assayed as follows (in per cent):
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North Zone South Zone
CaO 31.06 30.09
MgO 21.29 21.53
SiO2 0.95 2.30
Al2O3 0.26 0.23
Fe2O3 0.24 0.12
Na2O 0.028 0.022
K2O 0.080 0.044
SO4 0.011 0.025
Ig. Loss 45.66 45.37
The North zone assays are averages of composite samples from
holes P-81-1 to 81-5, while the South zone assays have been averaged
from composite samples from holes P-81-6 and 81-7 (Assessment Report
10079).