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Acquisition of Asanko Gold (Tables)
12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Summary of Acquisition Date Fair Value of Major Class of Consideration Transferred
The following table summarises the acquisition date fair value of the consideration transferred:
 
 
  
UNITED STATES DOLLAR
 
 
  
2018
 
Cash - Asanko redeemable preference shares and equity
  
 
165.0
 
 
  
 
 
 
Total consideration transferred
  
 
165.0
 
 
  
 
 
 
Summary of gain on acquisition
The gain on acquisition was determined as follows:
 
 
  
UNITED STATES DOLLAR
 
 
  
2018
 
Total fair value of assets acquired
  
 
216.8
 
 
  
 
 
 
Redeemable preference shares equity financial asset acquired
1
  
 
129.9
 
Fair value of identifiable net assets acquired
2
  
 
86.9
 
 
  
 
 
 
Consideration transferred
  
 
(165.0
 
  
 
 
 
Gain on acquisition
3
  
 
51.8
 
 
  
 
 
 
Summary of Key Assumptions Used to Determine Fair Value of Redeemable Preference Shares at Acquisition
The redeemable preference shares were recognised as an investment in an equity financial instrument measured at fair value through other comprehensive income. The key assumptions used to determine the fair value of the redeemable preference shares of US$129.9 million at acquisition were as follows:
 
Par value of the preference shares
  
US$
165.0 million
 
Market related interest rate
  
 
7.85
Expected redemption period—2020 to 2023
  
 
5 years
 
 
Summary of Key Assumptions Used to Determine Fair Value of the Net Identifiable Assets Acquired
2
 
 
The key assumptions used to determine the fair value of the net identifiable assets acquired were as follows:
 
US$ gold price - 2018 to 2019
  
US$
1,200/oz
 
US$ gold price - 2020 onwards
  
US$
1,300/oz
 
Discount rate
  
 
10.27
Life-of-mine
- 2019 to 2030
  
 
12 years