Colorado Revised Statutes Title 34. Mineral Resources § 34-43-112. Placer claim certificate--recording--manner of locating

(a) The name of the claim, designating it as a placer claim;

(b) The name of the locator;

(c) The date of location;

(d) The number of acres or feet claimed; and

(e) A description of the claim by such reference to natural objects or permanent monuments as shall identify the claim.

(a) By posting upon such claim a plain sign or notice containing the name of the claim, the name of the locator, the date of discovery, and the number of acres or feet claimed;

(b) By marking the surface boundaries with substantial posts, sunk into the ground, one at each angle of the claim.