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Revenue (Tables)
12 Months Ended
Dec. 31, 2022
Revenue  
Summary of revenue from the sale of dore and concentrate

For the year ended December 31, 

2022

2021

(in thousands)

Doré sales, net

Gold

$

7,997

$

8,120

Silver

230

678

Less: Refining charges

(59)

(136)

Total doré sales, net

8,168

8,662

Concentrate sales

Gold

46,322

32,593

Silver

22,527

26,095

Copper

11,987

13,495

Lead

11,626

13,442

Zinc

50,470

41,256

Less: Treatment and refining charges

(12,013)

(11,349)

Total concentrate sales, net

130,919

115,532

Realized (loss) gain - embedded derivative, net (1)

(720)

777

Unrealized gain - embedded derivative, net

357

225

Total sales, net

$

138,724

$

125,196

(1)Copper, lead, and zinc are co-products. In the realized (loss) gain - embedded derivative, net, there are $0.7 million loss and $0.8 million gain, respectively, related to these co-products for the twelve months ended December 31, 2022 and 2021.