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A simplified definition of a mineral group is given on the basis of structural and compositional aspects. Then a hierarchical scheme for group nomenclature and mineral classification is introduced and...
The paper summarizes crystal朿hemical data and describes the IMA-accepted nomenclature of lovozerite-group minerals(LGM). The lovozerite group includes nine zeolite-like cyclosilicates with the general...
Minerals isostructural with sapphirine-1A, sapphirine-2M, and surinamite are closely related chain silicates that pose nomenclature problems because of the large number of sites and potential constitu...
A system of codifi cation that includes the year of publication and qualitative chemical composition has been developed for unnamed minerals reported in the literature. Such minerals are divided into ...
Chemical-element adjectival modifi ers are not part of the name of a mineral species. Schaller-type adjectival modifi ers, which have the endings -oan or -ian, formerly recommended by the CNMMN of the...
Epidote-group minerals are monoclinic in symmetry and have topology consistent with space group P21/m and the general formula A2M3[T2O7][TO4](O,F)(OH,O). Zoisite is an orthorhombic polymorph of clinoz...
A systematic chemical and structural investigation of arrojadite-group minerals has provided new data allowing us to design a consistent nomenclature scheme, approved by the IMA CNMMN (vote05-D). The ...
This is the final report on the nomenclature of eudialyte-group minerals by the Eudialyte Nomenclature Subcommittee established by the Commission on New Minerals and Mineral Names of the International...
Detailed X-ray single-crystal structure refinements and complete (SIMS + EMPA) microprobe chemical analyses of a series of non-metamict samples of hellandite recently found in Latium (Italy),together ...
Minerals of the h鰃bomite, nigerite, and taaffeite groups form polysomatic series composed of spinel (S) and nolanite (N) modules. The idealised formula of a spinel module is T2M4O8 where T and M repre...
The present report contains recommendations on the nomenclature of the labuntsovite-group (LG) minerals based on a crystal-structural classification. The labuntsovite group includes hydrous titanium a...
The apatite supergroup includes minerals with a generic chemical formula IXM12 VIIM23(IVTO4)3X (Z  2); chemically they can be phosphates, arsenates, vanadates, silicates, and sulphates. Themaximum sp...
A new scheme of nomenclature for the pyrochlore supergroup, approved by the CNMNCMA, is based on the ions at the A, B and Y sites. What has been referred to until now as the pyrochlore group should b...
A nomenclature for tourmaline-supergroup minerals is based on chemical systematics using the generalized tourmaline structural formula: XY3Z6(T6O18)(BO3)3V3W, where the most common ions(or vacancy) at...
Layered double hydroxide (LDH) compounds are characterized by structures in which layers with a brucite-like structure carry a net positive charge, usually due to the partial substitution of trivalent...

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