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Cover - USD ($)
 12 Months Ended
Dec. 31, 2022
Mar. 15, 2023
Jun. 30, 2022
Cover [Abstract]      
Entity Registrant Name SOLITARIO ZINC CORP.    
Entity Central Index Key 0000917225    
Document Type 10-K    
Amendment Flag false    
Entity Voluntary Filers Yes    
Current Fiscal Year End Date --12-31    
Entity Well Known Seasoned Issuer No    
Entity Small Business true    
Entity Shell Company false    
Entity Emerging Growth Company false    
Entity Current Reporting Status Yes    
Document Period End Date Dec. 31, 2022    
Entity Filer Category Non-accelerated Filer    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Entity Common Stock Shares Outstanding   64,801,373  
Entity Public Float     $ 33,511,000
Document Annual Report true    
Document Transition Report false    
Entity File Number 001-32978    
Entity Incorporation State Country Code CO    
Entity Tax Identification Number 84-1285791    
Entity Address Address Line 1 4251 Kipling St.    
Entity Address Address Line 2 Suite 390    
Entity Address City Or Town Wheat Ridge    
Entity Address State Or Province CO    
Entity Address Postal Zip Code 80033    
City Area Code 303    
Local Phone Number 534-1030    
Security 12b Title Common Stock, $0.01 par value    
Trading Symbol XPL    
Security Exchange Name NYSEAMER    
Entity Interactive Data Current Yes    
Icfr Auditor Attestation Flag false    
Auditor Firm Id 166    
Auditor Name Plante & Moran, LLLC    
Auditor Location Denver, Colorado