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Mineral Property (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Extractive Industries [Abstract]        
Geologic and field expenses $ 794 $ 322 $ 1,621 $ 619
Administrative 21 22 59 67
Total exploration costs $ 815 $ 344 $ 1,680 $ 686