Note 16 - Segmented Information - Long-term Assets by Geographic Segments (Details) - USD ($)	Jan. 31, 2022	Jul. 31, 2021	Jan. 31, 2021	Jul. 31, 2020
Mineral Rights and Properties	$ 174,712,496	$ 63,784,003
Property, Plant and Equipment	20,286,678	7,358,037
Restricted Cash	15,792,274	2,037,677	$ 1,839,300	$ 1,839,216
Equity-Accounted Investment	23,009,832	20,729,674
Other Non-Current Assets	2,755,424	586,332
Total Long-Term Assets	236,556,704	94,495,723
United States Texas [Member]
Mineral Rights and Properties	12,420,411	12,421,161
Property, Plant and Equipment	6,645,133	6,645,905
Restricted Cash	1,948,704	1,948,704
Equity-Accounted Investment	0	0
Other Non-Current Assets	639,637	522,306
Total Long-Term Assets	21,653,885	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	13,243,462	312,763
Restricted Cash	13,828,570	73,973
Equity-Accounted Investment	0	0
Other Non-Current Assets	1,915,565	16,000
Total Long-Term Assets	170,929,290	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	29,388	34,036
Restricted Cash	0	0
Equity-Accounted Investment	23,009,832	20,729,674
Other Non-Current Assets	200,222	48,026
Total Long-Term Assets	24,221,800	21,358,674
PARAGUAY
Mineral Rights and Properties	14,513,586	14,513,586
Property, Plant and Equipment	368,695	365,333
Restricted Cash	0	0
Equity-Accounted Investment	0	0
Other Non-Current Assets	0	0
Total Long-Term Assets	$ 14,882,281	$ 14,878,919