4. Fair Value of Financial Instruments (Details - Fair Value) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Investment in Rio Silver equities	$ 0	$ 70,609
Fair Value Measurements Recurring [Member]
Investment in Rio Silver equities	0	70,609
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 1 [Member]
Investment in Rio Silver equities	0	70,609
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 2 [Member]
Investment in Rio Silver equities	0	0
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level 3 [Member]
Investment in Rio Silver equities	$ 0	$ 0