CLAIMaps displays the location of active unpatented mining claims.

Available Data

In addition to active and pending mining claims, CLAIMaps also displays the following data:

  • Alienations
  • Active and pending dispositions
  • Pending withdrawals and notifications
  • Administrative boundaries
  • Base data

Download Data

CLAIMaps polygon data can be analyzed and combined with other data through the use of desktop geographic information system (GIS) software. Data is available in ESRI® ArcView® shape file format.

Paper Maps

Mining claim maps can be purchased in paper format from the Publication Services Sales Coordinator. Maps are available at two standard scales: 1:20000 and 1:40000. Pricing varies depending on desired size and colour quality.

Historical Mining Claim Maps

Before the creation of CLAIMaps, mining claims had to be drawn, by hand, on a map made of paper, linen or Mylar. These mining claim maps are now known as historical mining claim maps. All historical mining claim maps have been digitized and are now available in electronic Portable Document Format (PDF) from the Historical Mining Claim Map website.

Withdrawals and Reopenings

The Minister may, by order, withdraw an area from prospecting, staking (mining claim registration as of April 10th), sale and lease, or may lift an existing withdrawal to re-open the area for those activities.  These are referred to as withdrawal and reopening orders respectively.

To view a listing of withdrawals and reopenings visit the withdrawal and reopenings website.

June 1st Open List

Each year the Ministry publishes a list of lands and/or mining rights open for registration as of June 1st.   This list is published in one issue of the Ontario Gazette. Please note that some of these lands may be subject withdrawal under the Mining Act and you are encouraged to reference mining claim maps and/or contact the Provincial Recording Office if you have any questions.  Also published in the Ontario Gazette is a second list of lands that are in arrears for taxes.  If the total amount of taxes, penalties and costs are not paid by December 31 of the current year, the lands may be forfeited to the Crown.  Note that some of the lands on the list may have mine hazards within their boundaries.  Please conduct your mineral exploration activities accordingly.