v3.26.1
Cover - shares
3 Months Ended
Mar. 31, 2026
May 20, 2026
Document Information [Line Items]    
Document Type 10-Q/A  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag true  
Amendment Description This Amendment No. 1 on Form 10-Q/A (this “Amendment”) amends and supplements the Quarterly Report on Form 10-Q of Greenland Mines Ltd (the “Company”) for the quarterly period ended March 31, 2026, originally filed with the Securities and Exchange Commission (the “SEC”) on May 20, 2026 (the “Original Filing”).This Amendment is being filed to revise certain disclosures in the Original Filing in connection with the Company's responses to comment letters received from the Staff of the SEC's Division of Corporation Finance dated April 21, 2026, June 17, 2026, and July 17, 2026. This Amendment amends the following portions of the Original Filing:Item 1. Financial Statements: Note 1 (Organization and Business Description), updated to remove reference to estimates of mineralization prepared in a jurisdiction outside the United States; andItem 2. Management's Discussion and Analysis of Financial Condition and Results of Operations: the Results of Operations discussion of Professional Fees, General and Administrative Expenses, and Research and Development Expenses, and the Liquidity and Capital Resources discussion of Operating Activities, each for the three months ended March 31, 2026 and 2025.Except as described above, this Amendment does not amend, and should not be interpreted to amend, any other item or portion of the Original Filing, and does not reflect events occurring after the filing date of the Original Filing. Accordingly, this Amendment should be read together with the Original Filing and the Company's other filings with the SEC.As required by Rule 12b-15 under the Securities Exchange Act of 1934, new certifications of the Company's principal executive officer and principal financial officer are filed as exhibits to this Amendment.This Amendment sets forth only the specific Items identified above and, as filed, does not restate or reproduce the Original Filing in its entirety.  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Entity Information [Line Items]    
Entity Registrant Name GREENLAND MINES LTD  
Entity Central Index Key 0001907223  
Entity File Number 001-41340  
Entity Tax Identification Number 86-2727441  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 1300 South Boulevard  
Entity Address, Address Line Two Unit D  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28203  
Entity Phone Fax Numbers [Line Items]    
City Area Code (833)  
Local Phone Number 931-6330  
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   121,238,660
Common Stock    
Entity Listings [Line Items]    
Title of 12(b) Security Common Stock  
Trading Symbol GRML  
Security Exchange Name NASDAQ  
Warrants    
Entity Listings [Line Items]    
Title of 12(b) Security Warrants  
Trading Symbol GRMLW  
Security Exchange Name NASDAQ