Plate 5.1. [photomicrograph of Gombe Sandstone M1 (Mg ×40)]: Alternate bands of angular to sub-angular quartz and mica minerals. There is alignment in a preferred direction shown by the mica observed under crossed nicols

From

Environmental and Health Implications of Coal Mining at Maiganga, Gombe State, Nigeria

Chibuisi Samuel Ikwuagwu

Journal of Environment Pollution and Human Health. 2017, 5(1), 5-14 doi:10.12691/jephh-5-1-2