A geological study of the Kipala region. in the "Cuvette Centrale" of the Democratic Republic of Congo. has identified two groups of shales: the dark greasy facies. interbedded with the brownish-gray facies. https://www.diegojavierfares.com/top-sale-Ping-PLD-Putter-Anser-D-Matte-Black-big-sale/