porphyry

[abknight@zzzzzz]

Thanks Gary!

Tomas I think the blue grey stuff is clastic:

There are four principle classification textures that occur in rocks of
magmatic origin: phaneritic, aphanitic, glassy and clastic2. Phaneritic
rocks have mineral grains that are sufficiently large to be identifiable
in hand sample, whereas aphanitic rocks have mineral grains that are too
small to be identified without the aid of a microscope.  Glassy rocks
(such as obsidian) typify lava flows and shallow intrusions that lose
heat so rapidly that atoms in the silicate melt have insufficient
opportunity to organize into the regular geometric arrays of crystals.
Clastic rocks contain aggregated clasts or broken fragments of pre-
existing rocks, minerals or glass bound together by newly crystallized
minerals smaller in size than the clasts.