Compounds with a spinel-type structure include mineral species with the general formula
AB2φ4, where φ can be O2-, S2-, or Se2-. Space group symmetry is Fd3̄m, even if lower …

A new classification and nomenclature scheme for the amphibole-supergroup minerals is
described, based on the general formula AB2C5T8O22W2, where A=□, Na, K, Ca, Pb, Li; …

A nomenclature for tourmaline-supergroup minerals is based on chemical systematics using
the generalized tourmaline structural formula: XY3Z6 (T6O18)(BO3) 3V3W, where the most …

Abstract The Pefka Cu-Au-Te-In-Se and nearby St Philippos Pb-Zn-Bi-Sn-Ge-Ga-In vein-and
breccia-type deposits in western Thrace, Greece, display strong similarities, but also …

A Microsoft Excel spreadsheet has been programmed to assist with classification of
chemical analyses of orthorhombic and monoclinic amphiboles following the 2012 …

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 …

The garnet supergroup includes all minerals isostructural with garnet regardless of what
elements occupy the four atomic sites, ie, the supergroup includes several chemical classes …

The classification of the tetrahedrite group minerals in keeping with the current IMA-
accepted nomenclature rules is discussed. Tetrahedrite isotypes are cubic, with space group …

The apatite supergroup includes minerals with a generic chemical formula IX M1 2 VII M2 3
(IV TO 4) 3 X (Z= 2); chemically they can be phosphates, arsenates, vanadates, silicates …

A new scheme of nomenclature for the pyrochlore supergroup, approved by the CNMNC–
IMA, is based on the ions at the A, B and Y sites. What has been referred to until now as the …