Figure 7
(a,b) Reflectance spectra of uncoated (a) and corresponding coated (b) bedrock surfaces within 6 km of the Horne smelter, for lithologies common in the Rouyn-Noranda study area. As is typical of rock coatings formed near smelters11,12, coatings in the Rouyn-Noranda study area are effective in masking the reflectance properties of underlying lithologies. (c) Comparison between reflectance spectra of rock coatings from the Rouyn-Noranda study area (teal) and from Sudbury (red)11. Though Rouyn-Noranda coatings can have slightly higher reflectance values in the visible and shortwave infrared than Sudbury coatings, the overall reflectance properties of coatings from both sites are similar.
