Note 5 - Mineral Rights and Properties - Mineral Property Expenditures (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Mineral Property Expenditures	$ 2,109,173	$ 961,257	$ 3,765,689	$ 1,663,018
Palangana Mine [Member]
Mineral Property Expenditures	266,396	232,866	511,716	431,668
Goliad Project [Member]
Mineral Property Expenditures	31,986	71,267	129,440	117,056
Burke Hollow Project [Member]
Mineral Property Expenditures	702,155	185,838	1,417,696	315,616
Longhorn Project [Member]
Mineral Property Expenditures	4,529	2,289	7,450	4,577
Salvo Project [Member]
Mineral Property Expenditures	4,453	7,673	10,149	15,865
Anderson Project [Member]
Mineral Property Expenditures	16,114	19,425	32,609	38,891
Workman Creek Project [Member]
Mineral Property Expenditures	8,168	8,167	16,755	16,365
Slick Rock Project [Member]
Mineral Property Expenditures	12,994	12,993	26,484	26,129
Reno Creek Project [Member]
Mineral Property Expenditures	224,333	169,576	424,152	270,066
Allemand Ross Project [Member]
Mineral Property Expenditures	48,889	0	48,889	0
Christensen Ranch Mine [Member]
Mineral Property Expenditures	263,227	0	263,227	0
Ludeman Project [Member]
Mineral Property Expenditures	46,277	0	46,277	0
Moore Ranch Project [Member]
Mineral Property Expenditures	18,547	0	18,547	0
Yuty Project [Member]
Mineral Property Expenditures	12,567	8,334	20,612	14,328
Oviedo Project [Member]
Mineral Property Expenditures	139,847	98,804	322,594	146,415
Alto Parana Titanium Project [Member]
Mineral Property Expenditures	143,794	29,463	204,652	45,914
Other Property Acquisitions [Member]
Mineral Property Expenditures	$ 164,897	$ 114,562	$ 264,440	$ 220,128