Vocabulary 4 Unit II
Granite : a very hard, grey, pink, or black rock, used for building
Noun Al-rich relic material from the formation of the rapakivi granite melt is another source of assimilation.
Limestone : a white or light grey rock that is used as a building material and in the making of cement
Noun Limestone fragments and a few silicified grains (chert) are present, within a calcite spar cement.
Marble : a small ball, usually made of coloured or transparent glass, that is used in children's games
Noun Ventral surface of thorax and abdomen brown, more or less extensively suffused and marbled with bluish or greenish grey.