liptinite


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liptinite

[′lip·tə‚nīt]
(geology)
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Organic maceral and vitrinite reflectance of oil shale and mudstone samples from [K.sub.2][qn.sup.1] Borehole Sample Depth, Lithology Oil Sapropelic Liptinite m yield, group (a), (b1+b2), % % % Sapropelic amorphous SY-53 172.94 Oil 6.6 95.0 -- SY-10 SY-57 183.4 shale 4.66 96.7 -- SY-60 195.12 2.38 96.7 -- SY-85 127.98 1.88 95.0 -- SY-8 SY-87 144.85 Mudstone 1.7 95.0 -- SY-88 156.7 1.12 95.0 -- SY-92 173.25 0.32 95.0 -- SY-93 233.62 1.48 93.3 -- SY-9 SY-96 244.62 Oil 4.48 93.3 -- shale Borehole Vitrinite Inertinite TI Type Ro% (c), (d), of % % kerogen Collinite Fusinite 1.7 3.3 90 I 0.66 SY-10 -- 3.3 93 I 0.65 -- 3.3 93 I - 1.7 3.3 90 I 0.5 SY-8 1.7 3.3 90 I - 1.7 3.3 90 I 0.51 1.7 3.3 90 I - 1.7 5.0 87 I 0.54 SY-9 1.7 5.0 87 I 0.55 Note: "--" represents no data.
A petrographic analysis of coal (reflectance of vitrinite Rr, vitrinite Vitr, inertinite Inert, liptinite Lipt) was determined according to ISO 7404 (ISO 7404-5, 2009; ISO 7404-3, 2009) and performed using microscopic assembly of Nikon Labophot 2 with a DS-CCD Nikon DS-5M camera equipped with immersion lens with a magnification of 40x and a Marzhauser motorized scanning stage.
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. Table 2: The test result of coal ash composition.
Palynofacies analysis also indicated that Datta shales are rich in kerogen macerals, including inertinite, vitrinite, amorphinite ( Amorphous Organic Matter) with minor liptinite (i.e.
Liptinite in coal and oil source rocks in northern Thailand.
Generally, softness of coal increases with increasing vitrinite content and decreasing micronite and liptinite macerals.
Maceral analysis showed that the dominant composition are vitrinite with an average of 85.1% (between 77.9% and 94.09%) and inertinite with an average of 11.6% (2.50-18.37%), followed by liptinite with an average of 2.4%, and a little of mineral.
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 macerals.
The microscopically recognizable organic material consists mainly of liptinite, huminite and prebitumen [12, 13].
Petrographically these coals are rich in vitrinite and conspicuously deficient in liptinite macerals.