3.26.1 html 69 195 1 true 26 0 false 4 false false R1.htm 00000001 - Document - Cover Sheet http://usgoldmining.us/role/Cover Cover Cover 1 false false R2.htm 00000002 - Statement - Condensed Consolidated Balance Sheets (Unaudited) Sheet http://usgoldmining.us/role/BalanceSheets Condensed Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 00000003 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://usgoldmining.us/role/BalanceSheetsParenthetical Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 00000004 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) Sheet http://usgoldmining.us/role/StatementsOfOperationsAndComprehensiveLoss Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) Statements 4 false false R5.htm 00000005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://usgoldmining.us/role/StatementsOfCashFlows Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 5 false false R6.htm 00000006 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) Sheet http://usgoldmining.us/role/StatementsOfStockholdersEquity Condensed Consolidated Statements of Stockholders' Equity (Unaudited) Statements 6 false false R7.htm 999007 - Disclosure - Business Sheet http://usgoldmining.us/role/Business Business Notes 7 false false R8.htm 999008 - Disclosure - Summary of Significant Accounting Policies Sheet http://usgoldmining.us/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 999009 - Disclosure - Cash and Cash Equivalents and Restricted Cash Sheet http://usgoldmining.us/role/CashAndCashEquivalentsAndRestrictedCash Cash and Cash Equivalents and Restricted Cash Notes 9 false false R10.htm 999010 - Disclosure - Prepaid Expenses Sheet http://usgoldmining.us/role/PrepaidExpenses Prepaid Expenses Notes 10 false false R11.htm 999011 - Disclosure - Exploration Expenses Sheet http://usgoldmining.us/role/ExplorationExpenses Exploration Expenses Notes 11 false false R12.htm 999012 - Disclosure - General and Administrative Expenses Sheet http://usgoldmining.us/role/GeneralAndAdministrativeExpenses General and Administrative Expenses Notes 12 false false R13.htm 999013 - Disclosure - Capital Stock Sheet http://usgoldmining.us/role/CapitalStock Capital Stock Notes 13 false false R14.htm 999014 - Disclosure - Net Loss Per Share Sheet http://usgoldmining.us/role/NetLossPerShare Net Loss Per Share Notes 14 false false R15.htm 999015 - Disclosure - Financial Instruments Sheet http://usgoldmining.us/role/FinancialInstruments Financial Instruments Notes 15 false false R16.htm 999016 - Disclosure - Commitments and Contingencies Sheet http://usgoldmining.us/role/CommitmentsAndContingencies Commitments and Contingencies Notes 16 false false R17.htm 999017 - Disclosure - Related Party Transactions Sheet http://usgoldmining.us/role/RelatedPartyTransactions Related Party Transactions Notes 17 false false R18.htm 999018 - Disclosure - Subsequent Event Sheet http://usgoldmining.us/role/SubsequentEvent Subsequent Event Notes 18 false false R19.htm 999019 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://usgoldmining.us/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://usgoldmining.us/role/SummaryOfSignificantAccountingPolicies 19 false false R20.htm 999020 - Disclosure - Cash and Cash Equivalents and Restricted Cash (Tables) Sheet http://usgoldmining.us/role/CashAndCashEquivalentsAndRestrictedCashTables Cash and Cash Equivalents and Restricted Cash (Tables) Tables http://usgoldmining.us/role/CashAndCashEquivalentsAndRestrictedCash 20 false false R21.htm 999021 - Disclosure - Prepaid Expenses (Tables) Sheet http://usgoldmining.us/role/PrepaidExpensesTables Prepaid Expenses (Tables) Tables http://usgoldmining.us/role/PrepaidExpenses 21 false false R22.htm 999022 - Disclosure - Exploration Expenses (Tables) Sheet http://usgoldmining.us/role/ExplorationExpensesTables Exploration Expenses (Tables) Tables http://usgoldmining.us/role/ExplorationExpenses 22 false false R23.htm 999023 - Disclosure - General and Administrative Expenses (Tables) Sheet http://usgoldmining.us/role/GeneralAndAdministrativeExpensesTables General and Administrative Expenses (Tables) Tables http://usgoldmining.us/role/GeneralAndAdministrativeExpenses 23 false false R24.htm 999024 - Disclosure - Capital Stock (Tables) Sheet http://usgoldmining.us/role/CapitalStockTables Capital Stock (Tables) Tables http://usgoldmining.us/role/CapitalStock 24 false false R25.htm 999025 - Disclosure - Net Loss Per Share (Tables) Sheet http://usgoldmining.us/role/NetLossPerShareTables Net Loss Per Share (Tables) Tables http://usgoldmining.us/role/NetLossPerShare 25 false false R26.htm 999026 - Disclosure - Business (Details Narrative) Sheet http://usgoldmining.us/role/BusinessDetailsNarrative Business (Details Narrative) Details http://usgoldmining.us/role/Business 26 false false R27.htm 999027 - Disclosure - Schedule of Cash and Cash Equivalents (Details) Sheet http://usgoldmining.us/role/ScheduleOfCashAndCashEquivalentsDetails Schedule of Cash and Cash Equivalents (Details) Details 27 false false R28.htm 999028 - Disclosure - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) Sheet http://usgoldmining.us/role/ScheduleOfCashCashEquivalentsAndRestrictedCashDetails Schedule of Cash, Cash Equivalents and Restricted Cash (Details) Details 28 false false R29.htm 999029 - Disclosure - Schedule of Prepaid Expenses (Details) Sheet http://usgoldmining.us/role/ScheduleOfPrepaidExpensesDetails Schedule of Prepaid Expenses (Details) Details 29 false false R30.htm 999030 - Disclosure - Schedule of Costs Incurred For Exploration Activities (Details) Sheet http://usgoldmining.us/role/ScheduleOfCostsIncurredForExplorationActivitiesDetails Schedule of Costs Incurred For Exploration Activities (Details) Details 30 false false R31.htm 999031 - Disclosure - Schedule of General and Administrative Expenses (Details) Sheet http://usgoldmining.us/role/ScheduleOfGeneralAndAdministrativeExpensesDetails Schedule of General and Administrative Expenses (Details) Details 31 false false R32.htm 999032 - Disclosure - Schedule of Company???s Common Stock Purchase Warrants (Details) Sheet http://usgoldmining.us/role/ScheduleOfCompanysCommonStockPurchaseWarrantsDetails Schedule of Company???s Common Stock Purchase Warrants (Details) Details 32 false false R33.htm 999033 - Disclosure - Schedule of Weighted Average Basis Assumption Used in the Black-Scholes Option Pricing Model (Details) Sheet http://usgoldmining.us/role/ScheduleOfWeightedAverageBasisAssumptionUsedInBlack-scholesOptionPricingModelDetails Schedule of Weighted Average Basis Assumption Used in the Black-Scholes Option Pricing Model (Details) Details 33 false false R34.htm 999034 - Disclosure - Schedule of Stock Option Activity (Details) Sheet http://usgoldmining.us/role/ScheduleOfStockOptionActivityDetails Schedule of Stock Option Activity (Details) Details 34 false false R35.htm 999035 - Disclosure - Schedule of RSUs Activity (Details) Sheet http://usgoldmining.us/role/ScheduleOfRsusActivityDetails Schedule of RSUs Activity (Details) Details 35 false false R36.htm 999036 - Disclosure - Capital Stock (Details Narrative) Sheet http://usgoldmining.us/role/CapitalStockDetailsNarrative Capital Stock (Details Narrative) Details http://usgoldmining.us/role/CapitalStockTables 36 false false R37.htm 999037 - Disclosure - Schedule of Reconciliation of Net Loss Per Share of Common Stock (Details) Sheet http://usgoldmining.us/role/ScheduleOfReconciliationOfNetLossPerShareOfCommonStockDetails Schedule of Reconciliation of Net Loss Per Share of Common Stock (Details) Details 37 false false R38.htm 999038 - Disclosure - Net Loss Per Share (Details Narrative) Sheet http://usgoldmining.us/role/NetLossPerShareDetailsNarrative Net Loss Per Share (Details Narrative) Details http://usgoldmining.us/role/NetLossPerShareTables 38 false false R39.htm 999039 - Disclosure - Financial Instruments (Details Narrative) Sheet http://usgoldmining.us/role/FinancialInstrumentsDetailsNarrative Financial Instruments (Details Narrative) Details http://usgoldmining.us/role/FinancialInstruments 39 false false R40.htm 999040 - Disclosure - Commitments and Contingencies (Details Narrative) Sheet http://usgoldmining.us/role/CommitmentsAndContingenciesDetailsNarrative Commitments and Contingencies (Details Narrative) Details http://usgoldmining.us/role/CommitmentsAndContingencies 40 false false R41.htm 999041 - Disclosure - Related Party Transactions (Details Narrative) Sheet http://usgoldmining.us/role/RelatedPartyTransactionsDetailsNarrative Related Party Transactions (Details Narrative) Details http://usgoldmining.us/role/RelatedPartyTransactions 41 false false R42.htm 999042 - Disclosure - Subsequent Event (Details Narrative) Sheet http://usgoldmining.us/role/SubsequentEventDetailsNarrative Subsequent Event (Details Narrative) Details http://usgoldmining.us/role/SubsequentEvent 42 false false All Reports Book All Reports form10-q.htm usgo-20260331.xsd usgo-20260331_cal.xml usgo-20260331_def.xml usgo-20260331_lab.xml usgo-20260331_pre.xml http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 true true