Table 7. Relative Content of Pyrite and Clay Minerals, Classified by Size and Morphology^a.

raw coal		YQ9-BC	YQ9-SB	YQ15-BC	GZ9-DC	GZ9-SD	GZ9-BC
pyrite	massive	21.4	28.8	12.2	18.6	7.7	48.5
	framboidal	6.8	4.4	36.8	21.5	22.3	3.8
	disseminated	10.2	5.6	27.6	24.8	36.8	5.7
	cell fillings	16.6	11.2	9.8	11.2	18.2	11.3
	fracture fillings	34.4	41.6	7.6	14.2	5.5	27.2
	others	10.6	8.4	6.0	9.7	9.5	3.5
	total	100.0	100.0	100.0	100.0	100.0	100.0

raw coal		YQ9-BC	YQ9-SB	YQ15-BC	GZ9-DC	GZ9-SD	GZ9-BC
clay mineral	massive	18.4	46.0	14.2	5.8	8.7	65.5
	manded	29.8	22.6	34.8	39.6	30.5	14.3
	disperse	36.4	16.2	25.4	46.1	33.7	7.7
	cell fillings	15.4	15.2	25.6	8.5	27.1	12.5
	total	100.0	100.0	100.0	100.0	100.0	100.0

clean coal		YQ9-BC-C	YQ9-SB-C	YQ15-BC-C	GZ9-DC-C	GZ9-SD-C	GZ9-BC-C
pyrite	massive	2.4	1.0	1.8	5.8	3.2	0.7
	framboidal	26.8	19.6	48.0	36.7	15.8	16.1
	disseminated	54.6	58.2	37.8	46.2	55.8	76.0
	cell fillings	14.2	18.6	10.6	10.4	23.0	5.5
	fracture- fillings	0.4	0.4	0.2	0.3	0.3	0.2
	others	1.6	2.2	1.6	0.6	1.9	1.5
	total	100.0	100.0	100.0	100.0	100.0	100.0

clean coal		YQ9-BC-C	YQ9-SB-C	YQ15-BC-C	GZ9-DC-C	GZ9-SD-C	GZ9-BC-C
clay mineral	massive	0.8	1.2	1.8	0.5	1.2	0.6
	banded	24.4	28.4	33.4	39.8	33.5	17.8
	disperse	49.8	48.2	51.4	43.9	42.7	63.5
	cell fillings	25.0	22.2	13.4	15.8	22.6	18.1
	total	100.0	100.0	100.0	100.0	100.0	100.0

^aInfluence of mineral occurrence on washability.