I really didn’t think this was real, but it’s confirmed in the real-deal Handbook of Mineralogy:
There exists a mineral – magnesium iron silicate hydroxide, or Fe2Mg5Si8O22(OH)2 – which, due to its discovery in the town of Cummington, Massachusetts, is named…. cummingtonite.
Yes, I have better things to do with my time. But apparently some of my co-workers feel they do not, and delight in sending me some crazy shit.