melilite


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melilite

(ˈmɛlɪˌlaɪt)
n
(Geological Science) a honey-yellow mineral that is a tetragonal silicate of aluminium and calcium
References in periodicals archive ?
The analysis showed that the composition of the original ash sample included mainly quartz, lime, anhydrite, calcite and smaller amounts of orthoclase, periclase, gehlenite, larnite, merwinite, pseudowollastonite, hematite, ettringite, melilite and dolomite (Table 2).
Classification and Nomenclature of Volcanic Rocks, Lamprophyres, Carbonatites and Melilite Rocks.
The researchers modelled the trajectories of several hundred centimeter-sized melilite mineral particles during a phase of disk instability.
Foit Jr., F., Hooper, R., Rosenberg, P., An unusual pyroxene, melilite, and iron oxide mineral assemblage in a coal-fire buchite from Buffalo, Wyoming, Am.
Melilite (Ca,Na)[.sub.2](Al,Mg)(Si,Al)[.sub.2][O.sub.7] (RA)
These rocks, nephelinites, only contain nepheline [+ or -] melilite. Ultramafic xenoliths primarily occur only in alkali basalts.
PHOTO : CL micrograph of spinel + melilite-rich buildup showing zoned isometric common spinel crystals (green) in a melilite (blue) matrix.
(1984) Jeffreyite, (Ca,Na)[.sub.2](Be,Al)[Si.sub.2](O,OH)[.sub.7] a new mineral species and its relation to the melilite group.
In both cases, Mg was found to be mostly present as periclase (MgO) and also partially bound as undecomposed carbonates (dolomite--CaMg[(C[O.sub.3]).sub.2] can be found in the CFBC bottom ash) or silicates (merwinite, [Ca.sub.3]Mg[(Si[O.sub.4]).sub.2], melilite, [(Ca,Na).sub.2](Mg,Al)[(Si,Al).sub.3][O.sub.7]).