All samples were characterized by high sapropelitic content (95%; Table 2), and minor vitrinite and minor inertinite
. Because the thin sections were processed using the kerogen enrichment method, amorphous sapropelic OM is the main maceral in the sapropelitic group.
One of the simplest models for the coke quality prediction was based on the mean vitrinite reflectance and the inertinite
content in the parent coals (Miura, 1978).
Proximate (%) Coal samples [R.sup.o.sub.max] (%) [M.sub.ad] [A.sub.ad] The original 2.86 1.65 5.21 Modified sample 2.73 0.68 3.15 near anode Modified sample 2.89 0.76 4.08 near cathode Proximate (%) Ultimate (%) Coal samples [V.sub.ad] C H O S The original 6.12 86.52 2.64 6.83 3.32 Modified sample 8.21 85.20 2.72 8.77 2.01 near anode Modified sample 8.67 85.68 3.14 7.32 2.76 near cathode Maceral (%) Coal samples V I L The original 86.3 13.7 0.0 Modified sample 85.7 14.3 0.0 near anode Modified sample 84.1 15.9 0.0 near cathode Note: [R.sup.o.sub.max] = vitrinite reflectance; V = vitrinite; I = inertinite
; L = liptinite.
V, vitrinite; I, inertinite
; E, exinite; M, minerals.
According to the genetic type, organic macerals can be further divided into vitrinite, inertinite
, and exinite, among which certain physical differences can be observed.
Palynofacies analysis also indicated that Datta shales are rich in kerogen macerals, including inertinite
, vitrinite, amorphinite ( Amorphous Organic Matter) with minor liptinite (i.e.
The PS is a poor quality source rock with kerogen types II/III, consisting of inertinite
, algal, herbaceous and woody material.
Maceral/% Vitrinite Inertinite
Exinite [R.sub.0]/% No.
Vitrinite can be separated by flotation process by taking advantage of differences in its hidrophobicity compared to liptinite and inertinite
macerals, Sun (1954).
The Tertiary coals are humic and generally dominated by vitrinite, with significant amounts of liptinite and low amounts of inertinite