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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET
 9 Months Ended
Sep. 30, 2025
Property, Plant and Equipment [Abstract]  
MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET
The components of Mineral properties, plant and equipment, net are as follows (in thousands):
September 30, 2025December 31, 2024
Plant and equipment (1)
$2,074,930 $1,883,193 
Construction in process
 210,997 135,594 
Mineral properties subject to depletion

2,315,871 2,114,765 
Mineral properties not yet subject to depletion
 895,409 884,029 
Exploration and evaluation assets

247,164 254,146 
Total mineral properties, plant, and equipment 5,744,371 5,271,727 
Accumulated depreciation, plant and equipment

(898,877)(804,411)
Accumulated depletion, mineral properties(729,424)(684,449)
Mineral properties, plant, and equipment, net$4,116,070 $3,782,867 
(1)As of September 30, 2025 and December 31, 2024, plant and equipment includes finance lease right-of-use assets with a carrying amount of $74.3 million and $78.9 million, respectively.
No impairment was recognized during the three and nine months ended September 30, 2025.
During the three months ended September 30, 2024, the Company concluded that certain plant and equipment at Seabee was impaired and recorded a non-cash impairment of $0.4 million as a result of damage from the forest fires to remote equipment, including power poles, piping, and exploration equipment.
During the nine months ended September 30, 2024, the Company concluded that certain mineral properties, plant and equipment at Seabee and Çöpler were impaired and recorded non-cash impairments of $0.4 million and $114.2 million, respectively.