Note 9 - Convertible Debentures (Tables)

6 Months Ended

Dec. 31, 2017

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	December 31, 2017			June 30, 2017
Share price	0.04	–	0.05	0.04	–	0.10
Conversion price	0.02	–	0.03	0.02	–	0.06
Expected life (years)	0.50	–	0.81	0.50	–	0.81
Interest rate	1.02	–	1.11%	0.80	–	1.11%
Volatility	132.98	–	158.06%	106.63	–	158.06%
Dividend yield		N/A			N/A
Estimated forfeitures		N/A			N/A

	December 31, 2017		June 3 0 , 2017
Share price		0.04		0.03
Conversion price		0.03		0.02
Expected life (years)		1.25	0.39	–	0.64
Interest rate		1.31%		1.14%
Volatility		138.98%	152.55	–	181.43%
Dividend yield		N/A		N/A
Estimated forfeitures		N/A		N/A

Schedule of Change in Derivative Liability and Warrant [Table Text Block]

	Derivative liability
Balance, June 30, 2017	$	988,463
Derivatives settled upon conversion of debt		(541,254	)
Gain on extinguishment of convertible debt		(116,038	)
Loss on change in fair value of the derivative		504,946
Balance, December 31, 2017	$	836,117