CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Costs and expenses:
Exploration expense		$ (568,000)	$ (1,143,000)
Administrative expense		(3,580,000)	(4,659,000)
Stock-based compensation		(404,000)	(405,000)
Other operating income, net			19,000
Depreciation expense		(1,000)	(2,000)
Total costs and expenses		(4,553,000)	(6,190,000)
Loss from operations		(4,553,000)	(6,190,000)
Other income (expense):
Interest and other income, net		75,000	32,000
Gain (loss) on foreign currency transactions		(83,000)	121,000
Total other income (expense)		(8,000)	153,000
Loss from operations before income taxes and discontinued operations		(4,561,000)	(6,037,000)
Income taxes (Note 13)
Loss from continuing operations		(4,561,000)	(6,037,000)
Loss from discontinued operations, net of taxes (Note 4)		(3,039,000)	(3,191,000)
Net loss		$ (7,600,000)	$ (9,228,000)
Net loss per common share - basic
Continuing operations	[1]	$ (0.31)	$ (0.71)
Discontinued operations	[1]	(0.21)	(0.37)
Net loss per common share - basic (in dollars per share)	[1]	$ (0.52)	$ (1.08)
Weighted-average shares outstanding - basic (in shares)	[2]	14,721,036	8,539,811

[1] Reflects the one-for-25 reverse stock split that became effective June 9, 2023. Refer to Note 1, “Nature of Operations.”

[2] Potentially dilutive shares have not been included for loss periods because to do so would be anti-dilutive. Potentially dilutive shares at December 31, 2024, consist of 1,070,079 equivalent shares related to stock compensation and 10,819,742 equivalent shares related to warrants outstanding. Potentially dilutive shares at December 31, 2023, consist of 400,409 equivalent shares related to stock compensation and 11,308,314 equivalent shares related to warrants outstanding. See Note 14 for a discussion of stock-based compensation and warrants.