Mining Properties

12 Months Ended

Dec. 31, 2021

Mining Properties [Abstract]

MINING PROPERTIES

MINING PROPERTIES

Mining properties consist of the following (in thousands):

December 31, 2021	Palmarejo		Rochester		Kensington		Wharf		Silvertip		Sterling		Other		Total
Mine development	$	307,698	$	437,833	$	382,492	$	49,045	$	67,805	$	3,861	$	—	$	1,248,734
Accumulated amortization	(211,187)		(158,805)		(302,582)		(24,358)		(11,685)		(1,515)		—		(710,132)
	96,511		279,028		79,910		24,687		56,120		2,346		—		538,602
Mineral interests	629,303		19,098		—		48,062		114,036		95,499		—		905,998
Accumulated amortization	(532,155)		—		—		(34,818)		(24,828)		—		—		(591,801)
	97,148		19,098		—		13,244		89,208		95,499		—		314,197
Mining properties, net	$	193,659	$	298,126	$	79,910	$	37,931	$	145,328	$	97,845	$	—	$	852,799

In June 2021, Silvertip repurchased from Silvertip Resources Investment Cayman Ltd. a net smelter returns royalty of 1.429% on the first 1,434,000 metric tonnes of mineral resources mined, and 1.00% thereafter for consideration of $7.0 million.

December 31, 2020	Palmarejo		Rochester		Kensington		Wharf		Silvertip		Sterling		La Preciosa		Other		Total
Mine development	$	280,184	$	270,648	$	360,201	$	33,578	$	48,589	$	4,107	$	—	$	—	$	997,307
Accumulated amortization	(194,898)		(157,526)		(264,014)		(22,547)		(10,747)		(1,099)		—		—		(650,831)
	85,286		113,122		96,187		11,031		37,842		3,008		—		—		346,476
Mineral interests	629,303		18,541		—		48,062		105,736		95,499		49,085				946,226
Accumulated amortization	(518,866)		—		—		(32,217)		(24,828)		—		—				(575,911)
	110,437		18,541		—		15,845		80,908		95,499		49,085		—		370,315
Mining properties, net	$	195,723	$	131,663	$	96,187	$	26,876	$	118,750	$	98,507	$	49,085	$	—	$	716,790