Example
          A copper specimen from a former mine in the Saint-Ephrem-de-Beauce region. The mine had two entrances, about 5 kilometres apart. The geographic co-ordinates of the collection site
correspond to the two mine entrances, i.e. 70°56'21" West longitude and 46°00'12" North latitude for one and 70°56'04" West longitude and 45°58'35" North latitude for the other. These geographic co-ordinates are on two different maps: Beauceville, 21L02, and La Guadeloupe, 21E15.
          
|  | Longitude | 70 56 21 W; 70 56 04 W | 
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|  | Latitude | 46 00 12 N; 45 58 35 N | 
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|  | Map Reference | 21L02; 21E15 | 
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