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Costs of sales (Tables)
 12 Months Ended
Dec. 31, 2017
Costs of sales  
Schedule of Costs of sales

 

 

 

 

 

 

 

 

 

 

 

  

  
2017

  

  
2016

 

Per ounce stream purchase cost

 

 

$

127.4

 

 

$

95.6

 

Cost of prepaid ounces

 

 

 

7.7

 

 

 

6.5

 

Mineral production taxes

 

 

 

2.3

 

 

 

0.5

 

Oil & gas operating costs

 

 

 

4.6

 

 

 

3.2

 

 

 

 

$

142.0

 

 

$

105.8