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Revenue Mineral Property Sale	12 Months Ended
Dec. 31, 2020
Revenue Recognition [Abstract]
Revenue Mineral Property Sale	On January 22, 2019, Solitario completed the sale of its interest in certain royalties to SilverStream, discussed above. At closing of the Royalty Sale, Solitario received Cdn$250,000 in cash and the SilverStream Note in the principal amount of Cdn$350,000 and recorded mineral property revenue of $408,000 for the Royalty Sale, consisting of the fair value of the cash received on the date of the sale of $185,000 and the fair value of the SilverStream Note on the date of the sale of $263,000 less the carrying value of the royalties sold of $40,000.

Revenue Mineral Property Sale

12 Months Ended

Dec. 31, 2020

On January 22, 2019, Solitario completed the sale of its interest in certain royalties to SilverStream, discussed above. At closing of the Royalty Sale, Solitario received Cdn$250,000 in cash and the SilverStream Note in the principal amount of Cdn$350,000 and recorded mineral property revenue of $408,000 for the Royalty Sale, consisting of the fair value of the cash received on the date of the sale of $185,000 and the fair value of the SilverStream Note on the date of the sale of $263,000 less the carrying value of the royalties sold of $40,000.