Note 16 - Segmented Information - Long-term Assets by Geographic Segments (Details) - USD ($)	Apr. 30, 2022	Jul. 31, 2021	Apr. 30, 2021	Jul. 31, 2020
Mineral Rights and Properties	$ 175,212,121	$ 63,784,003
Property, Plant and Equipment	20,449,229	7,358,037
Restricted Cash	14,038,095	2,037,677	$ 2,037,677	$ 1,839,216
Equity-Accounted Investment	24,829,322	20,729,674
Other Non-Current Assets	3,462,216	586,332
Total Long-Term Assets	237,990,983	94,495,723
United States Texas [Member]
Mineral Rights and Properties	12,420,036	12,421,161
Property, Plant and Equipment	7,011,036	6,645,905
Restricted Cash	1,948,704	1,948,704
Equity-Accounted Investment	0	0
Other Non-Current Assets	1,462,793	522,306
Total Long-Term Assets	22,842,569	21,538,076
United States Arizona [Member]
Mineral Rights and Properties	4,677,477	4,627,477
Property, Plant and Equipment	0	0
Restricted Cash	15,000	15,000
Equity-Accounted Investment	0	0
Other Non-Current Assets	0	0
Total Long-Term Assets	4,692,477	4,642,477
United States Wyoming [Member]
Mineral Rights and Properties	141,941,693	31,527,870
Property, Plant and Equipment	13,038,394	312,763
Restricted Cash	12,074,391	73,973
Equity-Accounted Investment	0	0
Other Non-Current Assets	1,807,853	16,000
Total Long-Term Assets	168,862,331	31,930,606
United States Other States [Member]
Mineral Rights and Properties	176,971	146,971
Property, Plant and Equipment	0	0
Restricted Cash	0	0
Equity-Accounted Investment	0	0
Other Non-Current Assets	0	0
Total Long-Term Assets	176,971	146,971
CANADA
Mineral Rights and Properties	982,358	546,938
Property, Plant and Equipment	30,670	34,036
Restricted Cash	0	0
Equity-Accounted Investment	24,829,322	20,729,674
Other Non-Current Assets	191,570	48,026
Total Long-Term Assets	26,033,920	21,358,674
PARAGUAY
Mineral Rights and Properties	15,013,586	14,513,586
Property, Plant and Equipment	369,129	365,333
Restricted Cash	0	0
Equity-Accounted Investment	0	0
Other Non-Current Assets	0	0
Total Long-Term Assets	$ 15,382,715	$ 14,878,919