Yes, you are quite right, Scott.
Pardon me this peeve,
, but the subjective use of the name selenite has always pestered, confounded, and confused me. Two names for the same mineral! What is it that makes them different? Moonlight?
Mindat states, "Selenite is "mostly" synonymous with gypsum,
but has been used historically to describe the transparent variety."
But in the 3958 pictures of Gypsum on Mindat you can find many transparent and clear specimens called only Gypsum, not Gypsum,Variety Selenite.
And of the 725 pictures of Selenite on Mindat they do not all appear transparent. I mean are they Gypsum Roses or Selenite Roses.?
Mindat also says that first mention of the word gypsum is by a Greek, Theophrastus, around 300 BC from the Greek word "gypsos". Selenite was coined by J.G. Wallerius in his 1747 book "Mineralogia", from the Greek word for Moon. He came up with the name because the reflected and transmitted light looked like moon-light. And this is a hundred years before Lewis Carroll!
Okay, I'm done. There's my 1 - 2 cents explained.
We can call it either one. Selenite might be more "politically" correct.
Gypsum, Var. Selenite. Nothing hard about that.
I did come across this specimen picture on Mindat under Selenite photos, page 13, that looks a lot like yours, Ryan. Just a stab at it.
https://www.mindat.org/photo-53153.html