Roy,
I am sorry if I sound as if I want to take something away from you. I didn't! It is just a big something and of scientific interest to own a lithic meteorite - if it really is.
I got goose bumps (?word) at once, when I discovered the one I found! I knew on the spot I was very very close to something pretty special or a once in a life time incident. Few minutes later I had determined it's specific gravity - as I had discovered it in front of my own doorsteps (using my old metal detector just for fun!). Submerging it into water and weighting what amount it had replaced, was easy
Specific gravity was a fraction to low (only about 7.2g/cm³) for a Ni-Fe-Meteorite. But not to far off as making it impossible to be a genuine meteorite. I grind a flat surface and etched it with concentrated HNO3 acid to reveal "Wittmannstädt'sche etching figures" - but no! I gave a small sample to a collegue in our Geochemistry, asking for some key elements to be analysed. Turned out to be as stated above - which doomed my very special discovery and left me with the search for an explanation for what I actually had in hand.
As a rail road track was only 200 yrds. away from our house - and it lead to a steel factory close by, for about the past 40 years, I had to accept that it maybe was droped from a rail waggon. Bomb shrapnels etc. were also considered by me, but the chemistry is far of for those kind of stuff.
Featuring only concave surfaces and all with what appears to be a "furnace crust" - I have not yet given up the hope to own a very special item! But there is no process known, to enrich to the Manganese content present in my sample - other then human manufaturing processes.
I keep it in my collection as an almost perfect meteorite mimicry sample ...