['The', 'tendency', 'is', 'very', 'clear', 'that', 'the', 'formation', 'rates', 'of', 'both', 'hydrozincite', 'and', 'cuprite', 'are', 'quite', 'suppressed', 'for', 'Cu40Zn', 'with', 'preformed', 'hydrozincite', '(', 'HZ7', ')', 'compared', 'to', 'the', 'diamond', 'polished', 'surface', '(', 'DP', ')', '.']