Solitario(XPL) - 2021 Q3 - Quarterly Report

For the transition period from to ______________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Commission File Number. 001-39278 FORM 10-Q(Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (303) 534-1030 SOLITARIO ZINC CORP. (Registrant's telephone number, including area code) (Exact name of ...