id	keyword
gc-334	glauconitic
gc-334	sample
gc-334	material
gc-334	m3/2
gc-334	fig
gc-334	layers
gc-334	xrd
gc-334	table
gc-334	m3/1
gc-334	sandstones
gc-334	srodon
gc-334	rg/2
gc-334	matrix
gc-334	fractions
gc-334	mineral
gc-334	grains
gc-334	thc
gc-334	content