Proposed Title 1: - Queen's University

Sample ID Deposit Mineral
Mineral values Temperatures Fluid values
δ 18 O
V-SMOW
per mil
δ 13 C
V-PDB
per mil
o C
δ 18 O fluid
V-SMOW
per mil
δ 13 C fluid
V-PDB
per mil
C-27-319D Cinch Lake MG-Calcite 11.4 -2.6 320 6.3 -4.7
C-37-28 Cinch Lake Calcite 12.7 -1.7 320 7.5 -3.8
C-42-180 Cinch Lake Calcite 12.8 -2.1 320 7.6 -4.2
C-42-180D Cinch Lake Calcite 12.6 -1.9 320 7.5 -4.1
C-42-244-1 Cinch Lake Calcite 10.5 -1.9 320 5.4 -4.1
Athabasca-type U 6 mineralization
3705 Ace-Fay Dolomite 11.2 -1 235 3.3 -1.9
3705-D Ace-Fay Dolomite 11.2 -0.9 235 3.3 -1.9
Late calcite veins
C-09-181 Cinch Lake Calcite 14.6 -2.5 140 1.2 -0.5
C-16-220 Cinch Lake Calcite 12.8 -2.8 140 -0.6 -0.8
C-42-244 Cinch Lake Calcite 13.4 -6.4 140 0.02 -4.5
C-42-244D Cinch Lake Calcite 13.3 -6.5 140 -0.1 -4.6
Table 3.5. Measured δ 18 O and δ 13 C for calcite and calculated δ 18 O fluid and δ 13 C fluid values for
fluids in equilibrium with carbonate minerals for different generations of U mineralization in
the Beaverlodge area. Paragenesis of all phases analyzed is shown in Figures 3.3 and 3.4 and
data are plotted in Figure 3.8 (see the text for more details).
Syn-ore Cal 8 calcite in the major breccia-type U 4 yields a wide range of δ 18 O values
between 7.6 per mil and 22.2 per mil and δ 13 C values between -5.8 per mil and -1.6 per
mil (Table 3.5). These values are similar to O and C isotopic compositions of calcite
matrix from mineralized breccia reported by Tortosa (1983) at the Cenex deposit and to
values reported by Sassano (1972) for the type-C calcite in the Ace-Fay deposit that he
interpreted as syn-ore calcite-filling breccia. A formation temperature of 330°C was used
to calculate δ 18 O fluid and δ 13 C fluid values, which range from 2.8 per mil to 17.4 per mil and
-8.3 per mil to -4 per mil, respectively (Fig. 3.7; Table 3.5). The lowest δ 13 C fluid values
(Fig. 3.7) likely reflect the influence of a reduced C source probably originating from the
country rock with which the fluid has interacted (Fig. 3.7).
Syn-ore Cal 9 calcite sampled from the volcanic-type U 5 mineralization has δ 18 O
values ranging from 9.8 per mil to 20.8 per mil and δ 13 C values between -2.7 per mil and -
1.1 per mil (Table 3.5). Using a formation temperature of 320°C (Table 3.3), the
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