Document and Entity Information (USD $)	9 Months Ended
	Apr. 30, 2013	Jun. 19, 2013
Document and Entity Information:
Entity Registrant Name	NORTHERN MINERALS & EXPLORATION LTD.
Document Type	10-Q
Document Period End Date	Apr. 30, 2013
Amendment Flag	true
Amendment Description	10-Q/A QUARTERLY REPORT ENDING APRIL 30, 2013 (REFILED WITH RESTATED STATEMENT OF CASH FLOWS)
Entity Central Index Key	0001415744
Current Fiscal Year End Date	--07-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Entity Common Stock, Shares Outstanding		50,444,842
Entity Public Float		$ 3,665,671.56