Proposed Title 1: - Queen's University

Figure 2.8. Generalized paragenesis of the uranium mineralization, metamorphic
relationships and deformation sequences in the Beaverlodge area. The paragenesis is based on
petrographic, metamorphic and structural observations, style of uranium mineralization and
associated deformation, and geochronology data of various paragenetically constrained
uranium grains. Note: The thickness of the horizontal line is proportional to the abundance of
the mineral. The main uranium mineralization event is associated with the brecciation stage.
The mylonitic foliation is cut by Chl 2 chlorite, Qtz 2 quartz, Ab 1 albite, Cal 1 calcite,
and Ep 1 epidote veinlets (Fig. 2.8).
2.4.3.2. Stage 2: Cataclasite deformation:
Cataclasite resulted from a ductile-brittle reactivation of the mylonite. The cataclasite
rocks are composed of Qtz 1 quartz and Kfs 1 feldspars clasts, and crushed Cal 1 calcite and
Qtz 2
quartz veinlets embedded in a matrix composed of disseminated ±U 1 uraninite
associated with Cal 2 calcite, Hem 3 hematite, Chl 3 chlorite, Src 2 sericite, Cpy 2 chalcopyrite,
and Py 2 pyrite (Figs. 2.8 and 2.9A).
2.4.3.3. Stage 3: Early tensional ±U 2 veins formation
Cataclasite rocks are cut by early tensional Qtz 3 +Cal 3 -±U 2 veins. U 2 uraninite is
associated with Cal 4 calcite, Chl 4 chlorite, Hem 4 hematite, and Py 3 pyrite (Fig. 2.9B). Qtz 3
quartz and Cal 3 calcite veins display evidence of tensional fractures that contain syntaxial
fibers growth perpendicular to the wall of the vein (Fig. 2.9B). Syntaxial Cal 3 calcite vein
fill the core of the Qtz 3 quartz vein.
2.4.3.4. Stage 4: Granite-related metasomatic alteration in the Gunnar deposit
Ab 2 albite alteration of the Gunnar granite is pervasive and results in the
“dequartzification” of the granite. Replacement of Kfs 1 feldspars is complete and precedes
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