These rocks have doleritic, intergranular and
poikilitic texture (Fig 4D).
At Burnt Point, massive, pegmatitic gabbro contains cumulus ortho- and clinopyroxene, and large
poikilitic post-cumulus amphibole and plagioclase.
The main structure contains disseminated sulphides at the southern margin grading into net textured semi-massive and
poikilitic massive ore in the core and northern edge of the bodies (up to 80% sulphides -- Figure 3).
The primary ore textures comprise euhedral-anhedral-grained, metasomatic, edge-shared, void-filling,
poikilitic, slaty cleavage, skeletal, exsolution, graphic, crumpled, and cataclastic textures (Figure 4).
Poikilitic and overgrowth textures on plagioclase are common.
The Talavera sample shows large anhedral
poikilitic orthopyroxene crystals, leading to a hypidiomorphic subophitic to ophitic texture.
In some thin sections the hornblende is
poikilitic and contains inclusions of quartz.
3) Quartz occurs as cloudy anhedral grains with characteristic weak birefringence, prominent undulose extinction and low relief while muscovite occurs as tiny elongate plates with
poikilitic crystals of quartz.
Occurrence: As a monomineralic veinlet cross-cutting
poikilitic nepheline syenite.
5a), locally reaching 20 cm, and they sometimes have ragged
poikilitic margins containing uniformly distributed inclusions of matrix minerals.
Finally, there are some rare but interesting boulders consisting of coarse-grained diorite with
poikilitic megacrysts of amphibole that grew around leucocratic droplets (Fig.