Note 4 - Stockholders' Deficit - Summary of Stock Purchase Warrants Outstanding By Expiry Date (Details) - $ / shares |
9 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Jun. 30, 2017 |
|
| Class of warrant or right, exercise price (in dollars per share) | $ 0.05 | |
| Class of warrant or right, outstanding (in shares) | 4,000,000 | 4,044,465 |
| Range One [Member] | ||
| Class of warrant or right, expiry date | Oct. 01, 2017 | |
| Class of warrant or right, exercise price (in dollars per share) | $ 0.30 | |
| Class of warrant or right, outstanding (in shares) | 3,209,465 | |
| Range Two [Member] | ||
| Class of warrant or right, expiry date | Oct. 01, 2017 | |
| Class of warrant or right, exercise price (in dollars per share) | $ 0.20 | |
| Class of warrant or right, outstanding (in shares) | 835,000 | |
| Range Three [Member] | ||
| Class of warrant or right, expiry date | Nov. 16, 2022 | |
| Class of warrant or right, exercise price (in dollars per share) | $ 0.05 | |
| Class of warrant or right, outstanding (in shares) | 4,000,000 |