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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Operating expenses    
Exploration expense $ 2,378 $ 2,283
Depreciation and amortization 25 29
General and administrative 1,712 1,360
Total operating expenses 4,115 3,672
Other (expense) income    
Interest and dividend income 191 131
Other income 0 20
Gain (loss) on derivative instruments 31 (4)
Loss on sale of marketable equity securities 0 (201)
Unrealized gain (loss) on short-term investments 56 (108)
Unrealized gain (loss) on marketable equity securities 83 (94)
Total other income (expense) 361 (256)
Net loss $ (3,754) $ (3,928)
Net loss per common share    
Basic and diluted $ (0.05) $ (0.06)
Weighted average shares outstanding    
Weighted average shares outstanding- Basic and diluted 68,743 64,263