Proposed Title 1: - Queen's University

Mineralized breccias showing quartz-feldspar porphyry fragments cemented by massive U 1 .
(B) Mineralized breccias showing U 1 vein crosscutting the early pre-ore alteration assemblage
and associated with Cal 2 , Chl 2 , and Hem 2 . (C) Syn-ore Ms 2 associated with the U 1 and Chl 1 .
(D) Mineralized breccias showing U 1 replacing early Py 1 grains. (E) Assemblage U 1 -Gn 1 -Au 1 -
Cpy 2 . Gn 1 galena as sub-euhedral crystals associated with native Au 1 , Cpy 2 and U 1 . Cpy 2 is
locally altered to Az 1 azurite. (F) Mineralized breccias showing U 1 intimately intergrown with
Gn 1 and Au 1 .
4.5.1.1.3. Post-ore alteration
Post-ore alteration is characterized by late mineralized veins containing banded
colloform U 2 uraninite coating Cal 3 calcite veins (Fig. 4.7A) and associated with minor
Chl 3 chlorite and Hem 3 hematite. U 2 uraninite fills late fractures indicating remobilization
during the post-ore alteration stage. Microprobe investigation reveals that secondary U 2
uraninite grains rim primary U 1 uraninite crystals in the ore (Figs. 4.6E and 4.6F). In
reflected light and backscattered electron images, U 2 uraninite is commonly heterogeneous
and zoned, has a mottled and speckled appearance, and forms sub -euhedral aggregates
(Fig. 4.6E). Post-ore Cal 4 calcite veins cut the ore assemblage (Fig. 4.7B). Thin, fibrous
Qtz 3 quartz veinlets crosscut the pre- and syn-ore assemblages (Fig. 4.7C). Cpy 2
chalcopyrite is locally altered to Az 1 azurite (Fig. 4.6E) likely during the post-ore stage.
Late Kln 1 kaolinite and Hem 4 hematite alteration obliterates earlier texture and minerals of
the pre-ore and syn-ore assemblage (Fig. 4.7D).
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