Note 4 - Restricted Cash (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Mar. 31, 2017	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2016	Sep. 30, 2015
Details
Refund of reclamation and road use bonds	$ 4,050	$ 379,175	$ 85,005	$ 85,005	$ 207,192

Amount of cash inflow for receipts of deposits classified as other.

No definition available.

Name:	us-gaap_ProceedsFromOtherDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration