[not rant]Metal in granite countertop[not rant]

Sac Arrow

Touchdown! Greaser!
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Snorting his way across the USA
So the kitchen and bathroom countertops have been replaced with marble. On one of the countertops, there is some metal embedded in the granite in one spot. It is gold or copper in color, and it does not appear to be corrosive. Could it actually be gold? Iron pyrites maybe?

It is difficult to get a good picture of it. It is embedded in the black splotches.
IMG_4114.jpg
IMG_4113.jpg
 
Clearly gold. Just grind the countertop to fine dust and leech it with cyanide !

You'll be rich.
 
Now you know why you paid so much for those countertops.
 
Biotite or Muscovite probably. Clear stuff is quartz, white stuff is something feldspathic or calcic plagioclase, and the black stuff is hornblende or tourmaline. If a magnet sticks to it it's magnatite even if it looks gold.
 
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Geez, that looks like the granite that my S/O is having replaced in our kitchen—with nine grand worth of other stuff.
 
Oh, yea. Click on that one - Not.
I can just imagine what kind of ads I would be seeing for the next month...
I clicked on it and my ads experience didn't change. Read into that what you like. ;) And that one is not "granite." More of an ultramafic, medium grained Gabbro. But whatever. Geology matters.
 
Almost certainly muscovite (mica)

Also almost certainly not marble ;-)

Source: am geologist

"almost certainly": am consultant :)

Yeah I did say marble, huh. Maybe I am losing them. Mica, huh.

Source: am not geologist
 
They are pretty big stones. Some kind of rock. I mean it's not sandstone, I know about that much.
 
Some of us like radiation.

Rich
Self-tanning-lotion.jpg
 
@Eric Stoltz
@Jeff Oslick

Geologist #3 here! Rock on!!
Gneiss! Even though we may have our faults, like our apatite for cinnabar, we do plateau with tectonic stability when epochs get tuff. We're bolder than most, dealing with the overburden of subduction; lest it may causes an orogeny ore uplift.

To the non-geologists, rocks are not funny. Metamorphically speaking, the aforementioned was not funny.
 
Does a working knowledge of hydrogeology count?
 
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