The Ultramafic zone displays strong talc-chlorite alteration and
schistose texture.
garnetiferous schist, quartz-mica schist, calcareous schist,
schistose marble, hornblende bearing quartz mica schist and micaceous marble.
The texture of amphibolite rocks is mainly medium-grained, nematogranoblastic,
schistose. The main rock-forming minerals of amphibolites are (in%): hornblende (30-83), plagioclase (4-43), quartz (~11).
The lithology in both aquifers is either migmatitic, gneissic, quartzitic, or
schistose. The top aquifer is the most widely exploited by the rural communities.
Schistose formations also form potential aquifiers when the wells tapping contact zones with intrusives.
The standard and most commonly used technique for evaluation of intestinal helminthes and
schistose infections remains microscopy for direct egg detection in the stool and species identification.
4e) is indicative of source areas with metamorphic influence (gneissic and
schistose; Tortosa et al., 1988) while the presence of quartz grains with rutile needles inclusions (Fig.
Schistose and flaky crystals in varied sizes were observed (Figures 3(a) and 3(b)).