Meteorite, Basalt, or something else?

[Steve in PA]

I found this yesterday in a plowed field in SW Pennsylvania. I was on my way to check out a section of the field when I got a signal on my metal detector and realized the signal was from this rock. When I picked it up, it was unusually heavy so I figured I better take it home and check it out. The thing that concerns me is there are a few voids on the surface indicative of slag, but this doesn't look like any slag I've ever seen and I don't know what it would be doing in rural farmland. This piece is magnetic.

I've posted this on the meteorite forum, but only got one response indicating that it might be Basalt.

Here are some pictures from all angles.

With tape measure and magnet:


Two of the four sides:


The other two sides:


Both ends:

 

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[ToddsPoint]

Reminds me of andesite. Half way between rhyolite and basalt. Just a guess. Gary

 

[Steve in PA]

Looked into the Andesite a bit. Doesn't look like it is common in Pennsylvania, only showing up in Lebanon County, about 160 miles from where I found this in Westmoreland County.

Jonestown Volcanic Suite (PAOhjv;21) (usgs.gov)