5. Inventories

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories at June 30, 2019 and December 31, 2018 consisted primarily of finished antimony products, antimony metal, antimony ore, and finished zeolite products that are stated at the lower of first-in, first-out cost or estimated net realizable value. Finished antimony products, antimony metal and finished zeolite products costs include raw materials, direct labor and processing facility overhead costs and freight. Inventory at June 30, 2019 and December 31, 2018 is as follows:

	June 30,		December 31,
	2019		2018
Antimony Metal	$	-	$	8,127
Antimony Oxide		252,128		255,782
Antimony Concentrates		-		2,214
Antimony Ore		201,543		257,067
Total antimony		453,671		523,190
Zeolite		270,017		232,071
	$	723,688	$	755,261