Mineral Resources Potential - Geothermal Resources

2 10 Mineral Resources Potential of Ethiopia
consists of two major rock type!: Trap volcanies euid sedimentary
rocks. The fluvid-lacustrine Delbi cod and oil shale-bring.
formation is composed of mudstone, ~ ~ r ~ clay, o silt, u clay, s
sand, sandstone, coal, organic shale and pyroclastic sediments. The
thickness of the coal seam ranges 0.5-2.2 m. Petrographical and
chemical studies conducted by the above authors revealed that the
coal in Delbi has low moisture content (3.98-10.4%) and ash
content 12.1-54.2 %) in fresh and 22.2% in dry), low carbon
content (1,343.09 in fresh and 38.53 in dry) and low calorific
value (4,000-5,000 cal/kg in fresh and 4,552 callkg in dry)
(Wolela, 1 99 1 ).
-
Maye cod deposit (Illubabur)
The Inter-Tappean continental fluvial-lacustrine sedimentary
sequence of Moye is situated within the geographic coordinates 7" 1
19'45" - 7' 24'7" N and 36' 48'21 " - 36" 5 1' E. It is located 59
km southwest of Jimma and 14 km west of Delbi. Moye is one of
the best studied coal deposit in Ethiopia by Wolela et a/., 1987; F;'7
Assefa Aklilu et ul., 1987; ~inyk et al., 1988; Korean lignite
exploration group, 1988. The area consists of volcanic kd I
sedimentary rocks. The sediments are composed of mudstone,
graded sandstone, sand y-bmcias conglomemte, carbonaceous
4
clay, coal and oi! shale. The volcanic rocks consist of basalt, tuff,
pyroclastics and tuff breccias. The coal seams at Moye are grouped
under humic coal (lignite-sub bituminous).
Nejo-Meckeke coal deposit (Wollep)
The fluvid-lacustrine lignite deposit of Nejo is located 9" 27'-9"
33'N and 39" 19'-35" 29'E, 190 km west of the town of Nekemte.
The area consists of three major lithological units: Precambrian :.-
i ; c .
c'-.*, 5 ..
basement, pre-basaltic sediment and Trap volcanics. The basement $ :,: i, '
consists of schist, phyllite, and metasediment, metavolcanic and . 13
dioritic intrusion. The pre-basaltic sediment overlies the basement $ :
- and cupped by trap vdcanite's. The sedimentary sequence
6'4
:: ,
, x m , .
*,*..
&:,:
" .