Note 6 - Mineral Rights and Properties (Tables)

12 Months Ended

Jul. 31, 2022

Notes Tables

Schedule Of Mineral Rights and Property Acquisition Costs [Table Text Block]

	July 31, 2022			July 31, 2021
Mineral Rights and Properties
Palangana Mine	$	6,028		$	6,028
Goliad Project		8,689			8,689
Burke Hollow Project		1,496			1,496
Anderson Project		3,470			3,470
Workman Creek Project		1,000			900
Reno Creek Project		31,528			31,528
Christensen Ranch Mine		39,062			-
Ludeman Project		32,306			-
Antelope Project		29,855			-
Moore Ranch Project		4,972			-
Irigaray Project		1,362			-
Barge Project		3,136			-
Gas Hills Project		980			-
Nine Mile Project		954			-
Charlie Project		905			-
Diabase Project		982			547
Yuty Project		11,947			11,947
Oviedo Project		1,133			1,133
Alto Paraná Titanium Project		1,933			1,433
Other Properties		4,139			540
		185,877			67,711
Accumulated Depletion		(3,930	)		(3,930	)
		181,947			63,781
Databases and Land Use Agreements		2,459			2,459
Accumulated Amortization		(2,458	)		(2,456	)
		1			3
	$	181,948		$	63,784

Schedule Of Mineral Property Expenditures Incurred by Major Projects [Table Text Block]

	Year Ended July 31,
	2022		2021		2020
Mineral Property Expenditures
Palangana Mine	$	1,060	$	890	$	1,343
Burke Hollow Project		3,647		1,446		1,130
Goliad Project		240		237		190
Anderson Project		108		79		71
Workman Creek Project		33		33		33
Reno Creek Project		821		672		597
Christensen Ranch Mine		1,257		-		-
Ludeman Project		219		-		-
Antelope Project		70		-		-
Moore Ranch Project		143		-		-
Barge Project		37		-		-
Yuty Project		86		31		66
Oviedo Project		619		372		350
Alto Paraná Titanium Project		574		199		230
Other Mineral Property Expenditures		1,240		520		572
	$	10,154	$	4,479	$	4,582