The picture doesn't really enlarge well enough to be certain, but simply looks like chloritically altered porphyry or granite. The black speck's are likely either hornblend or biotite. I can't tell from here if there are any sulphides present to make it really interesting.
Last edited by TheSilverBuick; August 22, 2016, 08:09 AM.
The picture doesn't really enlarge well enough to be certain, but simply looks like chloritically altered porphyry or granite. The black speck's are likely either hornblend or biotite. I can't tell from here if there are any sulphides present to make it really interesting.
Found it during the trench warfare reinactment - err - I mean geothermal installation yard dig.
Of all the paths you take in life - make sure a few of them are dirt.
Having some of the kids over from Europe, Irene and I took them to Chicago yesterday.
This way Granddaddy Gerrit could watch the Air Show :-)
I'm not a huge fan of big towns but I have to admit Chicago is an awesome city.
Comment