3. Inventories

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories at June 30, 2017 and December 31, 2016 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, 2017 and December 31, 2016, is as follows:

	June 30,		December 31,
	2017		2016
Antimony Metal	$	37,397	$	112,300
Antimony Oxide		357,996		326,126
Antimony Concentrates		10,006		30,815
Antimony Ore		154,973		181,815
Total antimony		560,372		651,056
Zeolite		246,069		204,581
	$	806,441	$	855,637