A recent law passed through the house in Colorado that will require property sellers to disclose possible third-party mineral rights ownership. That will include oil, gas, coal, and other minerals.
In Colorado, minerals are often severed and this law would require that buyers be made aware that there is a possibility someone else owns the minerals.
This act will apply to contracts made on or after the later of the applicable effective date or January 1, 2014.
The bill passed at the end of March and was introduced to the Senate in early April 2013.
You can read the full bill at www.leg.co.state.us