C.R.S. § 34-43-103

(1) The discoverer of a lode, within three months from the date of discovery, shall record his claim in the office of the recorder of the county in which such lode is situated, by a location certificate, which shall contain: (a) The name of the lode; (b) The name of the locator; (c) The date of location; (d) The number of feet in length claimed on each side of the center of the discovery shaft; (e) The general course of the lode as near as may be.