Derived from coalified woody tissue

Telohuminite

Comprises macerals with preserved intact botanical cell structures visible to various extents and isolated cells

Textinite (Tx)

Consists of ungelified cell walls either of isolated, but intact, individual cells or within tissues

Ulminite (U)

Denotes the cell walls of more or less gelified tissues

Detrohuminite

Consists of fine humic
fragments (<10 um)

Attrinite (A)

Consists of a mixture of fine huminitic particles (<10 µm) of different shape and spongy to porous, ungelified amorphous huminitic substances

Densinite (D)

Consists of fine huminitic particles (<10 µm) of various shape cemented
by amorphous dense huminitic substances

Gelohuminite

Comprises macerals originating from amorphous humic matter

Corpohuminite

Consists of homogenous, discrete bodies of former humic cell fillings occurring in situ with textinite or ulminite or isolated within attrinite, densinite or clay

Phlobaphinite (Ph)

Originates from tannin-rich cell excretions, deposited in cortical cells, in parenchyma-
tous or medullary-ray cells and especially in cork tissues

Pseudophlobaphinite (Pd)

Derives from colloidal humic solutions

Gelinite

Appears under reflected light as homogenous structureless or porous substance of huminitic reflectance

Levigelinite (L)

Completely structureless, compact and homogenous

Porigelinite (Pg)

Spongy, porous or microgranular texture

VITRINITE

Derived from coalified woody tissue

Telovitrinite

Comprises vitrinites with
preserved botanical cell
structures which may or
may not be visible

Telinite (T)

Consists of clearly recognizable cell walls of more-or-less intact plant tissue

Collotelinite (C)

Consists of more-or-less homogenized vitrinite layers which may exhibit poorly defined structure

Detrovitrinite

Consists of finely
fragmented vitrinized plan
remains occuring either
isolated or cemented by
amorphous vitrinic matter

Vitrodetrinite (V)

Occurs as discrete small vitrinitic fragments of varying shape that become discernible when surrounded by non-vitrinitic material

Collodetrinite (Cd)

Occurs as a mottled vitrinitic ground mass binding other coal components

Gelovitrinite

Consists of colloidal fillings
of vitrinitic material in former voids

Corpogelinite (Cg)

Consists of homogenous and discrete bodies representing cell infillings

Gelinite (G)

Consists of homogenous and structureless infillings of cracks and other voids