Note 2 - Summary of Significant Accounting Policies (Details Textual)	12 Months Ended
	Jul. 31, 2019 USD ($)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification
AOCI Attributable to Parent [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(103,641)
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 103,641
Mineral Rights, Databases [Member]
Mineral Property, Useful Life	5 years
Mineral Rights, Databases [Member] | Minimum [Member]
Property, Plant and Equipment, Estimated Useful Lives	5
Mineral Rights, Databases [Member] | Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives	10
Mineral Property, Land [Member]
Mineral Property, Useful Life	10 years
Hobson Processing Facility [Member]
Property, Plant and Equipment, Estimated Useful Lives	17
Computer Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives	3
Furniture and Fixtures [Member]
Property, Plant and Equipment, Estimated Useful Lives	5
Building [Member]
Property, Plant and Equipment, Estimated Useful Lives	20