1942 P Lincoln Cent Lamination, Oxidized Dark "Streak", & ?

1942 P Lincoln Cent lamination, oxidized dark "streak", & ?
This is a well-circulated cent that is odd.

2.72 grams (42 grains)
18.8 mm

My first thought was that this was a "lamination" coin with acid issues but there are some inconsistencies with everything being "acid" related.
This is an odd one that appears to have an odd lamination with an oxidized dark streak running through the middle of it on both sides. SW to NE on the obv and corresponding NW to SE on the reverse. This isn't from a permanent marker or stain but seems to be from something (a copper streak?) that runs through the coin.

The streak at first appeared black but when getting images I realized it is dark green (oxidized copper most likely).

When magnified, this green material is in recessed holes in the surface.

Also, in the field in front of Lincoln's face are some raised odd star-shaped (for lack of a better description) anomalies. Maybe crystalline in structure might be a better description of them.

There is at least one on the reverse as well. They are raised and seem too symmetrical to be contact marks and too numerous to be manmade.

Other raised areas in the field reminded me of frost on a window, OSB sheathing material, or the old game of Pick-up Sticks with irregular raised lines overlapping each other.

For the record- I see no aliens, rabbits, or unicorns in the raised areas. But this isn't Pareidolia either.

(I did find online references to Crystalline structures of copper but the info was beyond my paygrade to understand if they are only on a molecular level. I'm hoping Silviosi can help with the possible crystalline structures of copper.)

I have seen these odd structures/shapes one other time before and it may have been the same year.
Anyway, here are the images and let me know your thoughts.