Ah, well then the answer is YES, for sure!
I have based my working theory on all of the evidence I have seen presented by others and first-hand. I mentally analyzed all the data to come up with a list of properties and behaviors, then imagined a hypothetical process by which every anecdote could occur, and under which none were being violated or ignored.
The concept of the specific type of impurity that could accomplish all this came to me as folks like @Dred_pirate, @johnbigoilco and @Dukejohnson were describing the properties of their “petrified” THCa stones… like the specific ways in which they melt & decarboxylate differently from normal THCa crystals. These properties made me think of an old experimental procedure I did with Winterized & unwinterized crude resins in hexane and aqueous 29+% ammonium hydroxide. The ammonium*THCa product that formed (see my profile avatar photo) had VERY similar properties to those these oddly perfect, yet differently shaped, eventually medusa-petrified ‘polymorphs’ of THCa crystals were demonstrating. Soon, it came to light that small organic amines have historically been used in the petroleum industry to “sweeten” or de-acidify the LPG and other petroleum distillates. Knowing the potential of the various secondary & tertiary amines to form and precipitate Lewis acid conjugate “salts” with THCa in/from solutions, all the data finally clicked together in my head…
So I wrote it all out in Post # 337 (and reworded in # 420) of the “It’s not iSoBuTaNe” thread… along with some remediation tips in Post# 424.