8. Share Purchase Warrants: Schedule of Additional information regarding share purchase warrants (Details)	6 Months Ended
	Mar. 31, 2019 shares
Number of Warrants Outstanding and Exercisable	8,925,334
Weighted Average Remaining Contractual Life (years)	4 years 1 month 6 days
0.001
Number of Warrants Outstanding and Exercisable	1,333,334
Weighted Average Remaining Contractual Life (years)	8 months 12 days
0.10
Number of Warrants Outstanding and Exercisable	3,600,000
Weighted Average Remaining Contractual Life (years)	4 years 8 months 12 days
0.15
Number of Warrants Outstanding and Exercisable	1,000,000
Weighted Average Remaining Contractual Life (years)	6 months
0.50
Number of Warrants Outstanding and Exercisable	750,000
Weighted Average Remaining Contractual Life (years)	1 year 6 months
0.50a
Number of Warrants Outstanding and Exercisable	242,000
Weighted Average Remaining Contractual Life (years)	2 years 4 months 24 days
0.10c
Number of Warrants Outstanding and Exercisable	2,000,000
Weighted Average Remaining Contractual Life (years)	1 year 7 months 6 days