Revenue

6 Months Ended

Jun. 30, 2020

Revenue

Revenue

3. Revenue

The Company derives its revenue from the sale of doré and concentrates. The following table presents the Company’s net sales for each period presented, disaggregated by source:

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
	(in thousands)				(in thousands)
Doré sales, net
Gold	$	10,531	$	3,110	$	18,214	$	4,793
Silver		678		651		1,354		1,051
Less: Refining charges		(174)		(61)		(266)		(99)
Total doré sales, net		11,035		3,700		19,302		5,745
Concentrate sales
Gold		2,467		6,738		8,683		11,303
Silver		2,566		5,542		7,781		9,303
Copper		1,198		2,621		3,559		4,735
Lead		1,750		3,999		5,229		7,394
Zinc		5,176		10,852		14,216		23,123
Less: Treatment and refining charges		(3,300)		(3,606)		(9,135)		(7,016)
Total concentrate sales, net		9,857		26,146		30,333		48,842
Realized/unrealized embedded derivative, net		206		(472)		(532)		1,365
Total sales, net	$	21,098	$	29,374	$	49,103	$	55,952