georgeite, calciouranoite) have been accepted as mineral species by the CNMMN.
To obtain this approval, the senior investigator should submit a proposal to the chairman of the CNMMN (see Appendix I), either directly, or through a national new-minerals committee, if appropriate; at present, national committees perform this function in Russia and China.
Such a submission should contain as much information as possible so that the CNMMN can adequately judge the validity of the proposal.
Copies of an official check-list can be obtained from the chairman of the CNMMN or from one of the national representatives (Appendix I).
To assist scientists who do not have all the technical facilities to obtain some important data for the complete definition of a new mineral, the CNMMN (via its chairman or secretary) may ask some of its members, or specialists of some subcommittees, to collaborate with these scientists in order to improve their proposal.
It sometimes happens that non-mineralogical specialists such as crystallographers or chemists publish a crystal-structure description of a new mineral that has not been officially approved by the CNMMN.
Although the main purpose of this definition is to provide internal guidelines for the work of the CNMMN, it is hoped that it will be also generally accepted by mineralogists and other earth scientists.
The CNMMN has therefore ruled that, in the future, chemical compounds formed by the action of geological processes on anthropogenic substances cannot be considered as minerals.