Capital Stock - Additional Information (Details)	12 Months Ended
Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) ConvertibleNote $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Capital stock, shares authorized \| shares	200,000,000	200,000,000
Capital stock, par value \| $ / shares	$ 0.01	$ 0.01
Aggregate number of units issued (in shares) \| shares		362,427
Fair value of shares issued		$ 398,777
Shares of common stock issued under equity compensation plans \| shares	266,000
Fair value of shares issued for equity compensation plans	$ 170,240
Capital stock, shares issued \| shares	46,591,081	38,154,109
Capital stock, shares outstanding \| shares	46,591,081	38,154,109
Options, Granted \| shares		755,000
Stock based compensation (Note 5)	$ 440,327	$ 436,777
Total unrecognized compensation cost related to non-vested share based compensation	$ 22,960	143,998
Expected weighted-average period of unrecognized compensation cost	1 year 1 month 28 days
Total fair value of shares vested	$ 152,486	$ 332,835
Grassy Mountain Project
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of units issued (in shares) \| shares		166,792
Aggregate number of units issued, per unit \| $ / shares		$ 1.09
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Granted \| shares		755,000
Stock based compensation (Note 5)	97,681
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5)	172,406
Total unrecognized compensation cost related to non-vested share based compensation	$ 284,366
Expected weighted-average period of unrecognized compensation cost	10 months 28 days
Restricted stock units, Granted \| shares	701,000	0
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted Stock granted and issued under equity compensation plan \| shares	266,000
Fair value of shares granted and issued for equity compensation plans	$ 170,240
Stock based compensation (Note 5)	170,240
Service Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5)	50,861	$ 286,096
Service Condition \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5)	76,003	0
Performance Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5)	46,820	150,681
Performance Condition \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5)	$ 96,403	$ 0
Employees, Directors and Consultants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Granted \| shares	0	755,000
2015 and 2016 Stock Incentive and Compensation Plans
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options and shares available for grant to employees \| shares	3.5
Weighted average remaining contractual term (in years), grants	5 years
Mineral Property
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of units issued (in shares) \| shares		257,353
Fair value of shares issued		$ 277,941
Shares Average Price of $1.16
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of units issued (in shares) \| shares	7,766,388	3,209,133
Net proceeds from issuance of common stock and warrants	$ 6,119,954	$ 3,722,554
Accrued Interest
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of units issued (in shares) \| shares	404,584
Fair value of shares issued	$ 324,055
2019 Secured Convertible Notes
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Conversion of convertible notes to shares (in shares) \| shares		1,200,000
Number of senior secured convertible notes converted \| ConvertibleNote		1,200

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