"' Nepheline syenite "'is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar.
2.
A granulite may be visually quite distinct with abundant small pink or red pyralspite garnets in a'granular'holocrystalline matrix.
3.
The Apollo 17 Lunar Sample Information Catalog, 1973, describes it as a " holocrystalline, equigranular basalt containing some poikilitic plagioclase ".
4.
The dolerite is coarse grained in the main, often equigranular and holocrystalline although porphyritic areas are known and chilled margins and occasional compositional variations are noted.
5.
The word " granite " comes from the Latin " granum ", a grain, in reference to the coarse-grained structure of such a holocrystalline rock.
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