Item talk:Q162235
From geokb
Mindat Short Description
Pyroxene Group, Clinopyroxene Subgroup. In the Ca-Fe-Mg (diopside-hedenbergite-augite) quadrilateral, the ideal structural formula is M2M1[Si2O6], where M2 is a distorted octahedral site which preferentially accepts large cations such as alkaline earth...
Geoscience Ontology Status Notes
Pliny [translated by Hardouin, 1685] (77) Augites, in Caii Plinii secundi Naturalis historiae libri XXXVII interpretatione et notis illustravit Joannes Harduinus in usum Delphini, Franciscum Muguet (Paris) 406-406 The name was used to describe several different species until this paper: Werner A G (1792) Geognostische Beobachtungen, auf einer Reife durch einen Theil des böhmischen Mittelgebirges, Bergmannisches Journal 1, 215-266
IMA Formula (from Mindat)
(Ca,Mg,Fe)2Si2O6
RRUFF Formula (from Geoscience Ontology)
(Ca,Mg,Fe2+,Fe3+)2(Si,Al)2O6
