It is black with phenocrysts of plagioclase in a medium grained lamination.
2.
Flesh yellowish, juicy with medium grained texture and distinctive pleasant aroma.
3.
Primarily a red shale or fine to medium grained sandstone.
4.
It comprises a fine to medium grained sandstone ranging in thickness from 1.2m to 8m.
5.
The white sandstone is a medium grained, poorly sorted, trough cross-bedded braided fluvial channel.
6.
Most of the dolerites are fine to medium grained, dark grey rocks with augite and plagioclase as major constituents.
7.
"' Sangxia Group "'starts with medium grained sandstone, but in the upper layers increases shale.
8.
A massive thick cross bedded fine to medium grained quartz sandstone separates the Tunbridge Wells Sands from the overlying Grinstead Clay.
9.
Sandstones are medium grained rocks composed of rounded or angular fragments of sand size, that often but not always have a cement uniting them together.
10.
The building stone represents a particular lithology of medium grained massive sandstones within the Keuper Sandstone and may not always lie at precisely the same horizon.
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