³Ò°ù±ð²Ô±¹¾±±ô±ô±ðÌý³¾²¹°ù²ú±ô±ðÌýfrom the Central Metasedimentary Belt of the Grenville Province, near Marmora, Hastings County.
The acquisition of this rock was supported by the Special Initiatives Fund, 2011 and the Recreation Committee on behalf of UÀ¶Ý®ÊÓƵ employees.