MINERAL PROPERTIES (Tables)

12 Months Ended

Dec. 31, 2023

Mineral Industries Disclosures [Abstract]

Schedule of mineral property acquisition costs [Table Text Block]

	Singatse Peak Services ("SPS")						Lion CG ("LCG")		Quaterra Alaska ("QTA")				Falcon Copper Corp (formerly Blue Copper Resources Corp) ("FCC")
(In thousands of U.S dollars)	MacArthur	Yerington	Bear		Wassuk	Copper Canyon	Chaco Bear & Ashton		Butte Valley		Blue Copper		Blue Copper	Muncy	Ground hog	Total
	$	$	$		$	$	$		$		$		$	$	$	$
Balance December 31, 2021	2,489	1,195	1,532		1,405	-	-		200		-		-	-	-	6,821
Acquisition costs	-	-	193		-	-	602		-		118		500	-	-	1,413
Assignment of Butte Valley	-	-	-		-	-	-		(200	)	-		-	-	-	(200	)
Transfer to FCC	-	-	-		-	-	-		-		(118	)	118	-	-	-
Paid by Rio Tinto	-	-	(150	)	-	-	-		-		-		-	-	-	(150	)
Total additions (disposals) for the year	-	-	43		-	-	602		(200	)	-		618	-	-	1,063
Balance December 31, 2022	2,489	1,195	1,575		1,405	-	602		-		-		618	-	-	7,884
Acquisition costs	-	-	231		-	10	-		-		-		260	95	-	596
Impairment	-	-	-		-	-	(602	)	-		-		-	-	-	(602	)
Paid by Rio Tinto	-	-	(231	)	-	-	-		-		-		-	-	-	(231	)
Total additions (disposals) for the year	-	-	-		-	10	(602	)	-		-		260	95	-	(237	)
Balance December 31, 2023	2,489	1,195	1,575		1,405	10	-		-		-		878	95	-	7,647

Schedule of exploration expenditures recorded on the statement of loss and comprehensive loss [Table Text Block]

	Singatse Peak Services											Falcon Copper Corp
(In thousands of U.S dollars)	MacArthur		Yerington		Bear		Wassuk		Prospects		Copper Canyon	Muncy	Ground hog	Blue Copper	Recon	Nevada	Arizona	Total
	$		$		$		$		$		$	$	$	$	$	$	$	$
Property maintenance	165		101		-		57		1		-	-	-	235	-	-	-	559
Assay & Labs	101		21		53		-		61		-	-	-	1	-	-	-	237
Drilling	192		60		1,400		-		304		-	-	-	-	-	-	-	1,956
Environmental	5		578		-		-		-		-	-	-	-	-	-	-	583
Geological & mapping	-		-		-		-		-		-	-	-	41	24	-	-	65
Geophysical surveys	29		20		74		-		-		-	117	-	149	10	64	117	580
Technical study	-		1,440		-		-		-		1	-	-	2	-	-	-	1,443
Field support	1		1		75		-		-		-	-	72	601	11	151	15	927
Total expenses incurred	493		2,221		1,602		57		366		1	117	72	1,029	45	215	132	6,350
Total Expenditures funded by Rio Tinto	(493	)	(2,221	)	(1,602	)	(57	)	(366	)	-	-	-	-	-	-	-	(4,739	)
Total Expenditures funded by Lion CG	-		-		-		-		-		1	117	72	1,029	45	215	132	1,611

	Singatse Peak Services							Lion CG		Quaterra Alaska		Falcon Copper Corp
(In thousands of U.S dollars)	MacArthur		Yerington		Bear	Wassuk		Chaco Bear & Ashton	Groundhog	Butte Valley	Blue Copper	Groundhog	Blue Copper	Total
	$		$		$	$		$	$	$	$	$	$	$
Property maintenance	167		64		-	55		-	-	2	161	107	41	597
Assay & Labs	86		33		-	-		-	-	-	-	-	-	119
Drilling	478		437		-	-		-	-	-	-	-	-	915
Environmental	292		489		-	-		-	-	-	11	-	-	792
Geological & mapping	1		-		-	-		18	-	-	25	-	-	44
Geophysical surveys	61		1		5	-		-	-	11	59	-	35	172
Technical study	341		411		-	-		-	-	-	-	-	-	752
Field support	635		16		-	-		-	44	10	56	-	150	911
Total expenses incurred	2,061		1,451		5	55		18	44	23	312	107	226	4,302
Total Expenditures funded by Rio Tinto	(1,637	)	(1,394	)	-	(55	)	-	-	-	-	-	-	(3,086	)
Total Expenditures funded by Lion CG	424		57		5	-		18	44	23	312	107	226	1,216