Mineral properties, net of adjustments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 25
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=56951519&loc=d3e64895-109465

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Name:	us-gaap_MineralPropertiesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Mineral Properties - Capitalized Acquisition Costs on Mineral Properties (Details) - USD ($)	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016
Mineral Properties [Line Items]
Mineral properties, net	$ 46,460,386	$ 25,674,658	$ 25,674,658
Sleeper Gold Project
Mineral Properties [Line Items]
Mineral properties, net	25,674,658	$ 25,674,658
Grassy Mountain Project
Mineral Properties [Line Items]
Mineral properties, net	$ 20,785,728