Clastic, Granular, Phaneritic, Porphyritic
Porphyritic
Black to Grey, Bluish - Grey, Dark Greenish - Grey, Green, Light Greenish Grey
Black, Bluish - Grey, Brown, Dark Greenish - Grey, Green, Grey
Layered, Banded, Veined and Shiny
Dull, Banded and Foilated