5. Inventories

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventories

The major components of the Company's inventories at December 31, 2018 and 2017 were as follows:

	2018		2017
Antimony Metal	$	8,127	$	-
Antimony Oxide		255,782		408,217
Antimony Concentrates		2,214		35,554
Antimony Ore		257,067		187,133
Total antimony		523,190		630,904
Zeolite		232,071		283,805
	$	755,261	$	914,709

At December 31, 2018 and 2017, antimony metal consisted principally of recast metal from antimony-based compounds, and metal purchased from foreign suppliers. Antimony oxide inventory consisted of finished product oxide held at the Company's plant. Antimony concentrates and ore were held primarily at sites in Mexico and are essentially raw material. At December 31, 2018 and 2017, the antimony oxide and concentrates inventory in Mexico was valued at estimated net realizable value. The Company's zeolite inventory consists of salable zeolite material held in a Canadian warehouse and at BRZ's Idaho mining and production facility, and is carried at cost.