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Note 5 - Mineral Rights and Properties (Details Textual) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Apr. 30, 2022 USD ($) | Jan. 31, 2022 USD ($) | Oct. 31, 2021 USD ($) | Apr. 30, 2021 USD ($) | Apr. 30, 2022 USD ($) shares | Apr. 30, 2021 USD ($) | Jul. 31, 2021 USD ($)
Annual Property Maintenance Fees | $ 4,300,000 |  |  |  | $ 4,300,000 |  |
Stock Issued During Period, Value, for Mineral Properties |  | $ 206,129 | $ 219,390 |  |  |  |
Payments to Acquire Mineral Rights |  |  |  |  | 589,901 | $ 80,000 |
Mineral Properties, Gross | 179,140,630 |  |  |  | 179,140,630 |  | $ 67,711,387
Mineral Property Expenditures | 2,912,518 |  |  | $ 1,478,754 | $ 6,678,207 | 3,141,772 |
Diabase Project Addition [Member] |  |  |  |  |  |  |
Number of Mineral Claims |  |  |  |  | 10 |  |
Net Consideration, Mineral Resources |  |  |  |  | $ 435,420 |  |
Stock Issued During Period, Shares, for Mineral Properties (in shares) | shares |  |  |  |  | 111,864 |  |
Stock Issued During Period, Value, for Mineral Properties |  |  |  |  | $ 425,519 |  |
Payments to Acquire Mineral Rights |  |  |  |  | 9,901 |  |
Diabase Project [Member] |  |  |  |  |  |  |
Mineral Properties, Gross | 982,358 |  |  |  | 982,358 |  | 546,938
Alto Parana Titanium Project [Member] |  |  |  |  |  |  |
Mineral Properties, Gross | $ 1,933,030 |  |  |  | $ 1,933,030 |  | 1,433,030
Percentage of Net Smelter Royalty, Right to Acquire | 0.50% |  |  |  | 0.50% |  |
Payments to Acquire Smelter Royalty | $ 500,000 |  |  |  |  |  |
Mineral Property Expenditures | 76,925 |  |  | 88,796 | $ 281,577 | 134,710 |
Palangana Mine [Member] |  |  |  |  |  |  |
Mineral Properties, Gross | 6,027,784 |  |  |  | 6,027,784 |  | 6,027,784
Depletion, Total | 0 |  |  | 0 | 0 | 0 |
Mineral Property Expenditures | 299,727 |  |  | $ 216,791 | 811,443 | $ 648,459 |
UEC Wyoming Portfolio [Member] |  |  |  |  |  |  |
Mineral Properties, Gross | 110,413,823 |  |  |  | 110,413,823 |  | $ 0
Mineral Property Expenditures | $ 895,797 |  |  |  | $ 1,334,580 |  |

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