Uncommon varieties

(a) Determinations Section 3 of the Act of July 23, 1955 (30 U.S.C. 611), is amended— (1) by striking Sec. 3. No deposit and inserting the following: 3. Common varieties of mineral materials (a) In general No deposit; (2) in the first sentence— (A) by inserting mineral materials, including after varieties of; and (B) by striking or cinders and inserting cinders, and clay; (3) by striking Common varieties as used in this Act does not and inserting the following: (c) Definitions In this Act: (1) Common varieties The term common varieties does not; (4) by striking Petrified wood as used in this Act means and inserting the following: (2) Petrified wood The term petrified wood means; and (5) by inserting after subsection (a) the following: (b) Disposal of mineral materials (1) Definition of valid existing rights In this subsection, the term valid existing rights means rights to a mining claim located for any mineral material that— (A) had and still has some property giving mineral material the distinct and special value referred to in this section or, as the case may be, met the definition of block pumice referred to in subsection (c)(1); (B) was properly located and maintained under the general mining laws prior to the date of enactment of this subsection; (C) was supported by a discovery of a valuable mineral deposit within the meaning of the general mining laws as in effect immediately prior to the date of enactment of this subsection; and (D) continues to be valid under this Act. (2) Disposal Subject to valid existing rights, effective beginning on the date of enactment of this subsection, notwithstanding the references to the term common varieties in this section and to the exception to the term relating to a deposit of materials with some property giving it distinct and special value, all deposits of mineral materials referred to in this section (including the block pumice referred to in subsection (c)(1)) shall be subject to disposal only under the terms and conditions of the Act of July 31, 1947 (commonly known as the Materials Act of 1947) (30 U.S.C. 601 et seq.).. (b) Conforming amendment The first section of the Act of July 31, 1947 (commonly known as the Materials Act of 1947) (30 U.S.C. 601), is amended in the first sentence by striking common varieties of.