Their plan is to use a copper alloy called Muntz metal for cladding, which has the appearance of copper but doesn't turn green with corrosion, as bare copper would. The section nearest Lower Water will be clad with Wallace sandstone.
http://armourgroup.com/the-armour-gr...of-this-place/
Quote:
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Contextual and solid materials honour the district’s surroundings and are grounded within the downtown. The use of Sandstone references the iconic buildings in the city core and the workmanship ingrained in our past; the granite apron evokes the rocky coast and a familiar rugged character without flash; while copper, reimagines the oil-can hull of marine vessels and speaks to the copper cables used historically at cable wharf.
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https://canada.constructconnect.com/...-queens-marque
Quote:
The materials are important elements of creating the place, he said. Every attempt should be made to use local resources. Steel was originally considered for cladding but finally an alloy of copper called Muntz metal, from Ontario, was used. Wallace sandstone from local quarries has been used on numerous public buildings and was a good fit for the Queen’s Marque.
“Muntz metal has a lot of the characteristics of copper but doesn’t turn green,” he explained. “It has the waterfront shipyard grit of weathering steel but with the sophistication of Muntz.
“That brassy element is carried over right into the doorknobs. There is a continuation of that kind of jewellery.”
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Info on the sandstone:
http://armourgroup.com/queens-marque...levant-facade/
https://www.trurodaily.com/business/...a-time-160767/
I'm guessing from the photos that the cladding just hasn't been added yet, as it looks unfinished.