That's a mighty pretty piece, Warren! Nice glow, too!
In the 19th century the structure of the Bohemian glass industry, separation of blowing and decorating led to a distinct difference in the glass composition, Commissioner Blake reported in 1878 that the typical composition of Bohemian White glass was:
Pulverised quartz (Plentiful compared to sand) 100 parts
Carbonate of Potash 28-32 parts
Slacked lime 13-15 parts
Oxide of Manganese 1 part
Arsenic 3 parts.
This white glass was harder then American flint glass. Such variations are likely to result in different fluorescence then found elsewhere. Carbonates tend to fluoresce in the yellow region, Quartz is variable depending on source, Lime is again a yellow fluorescent, while Manganese gives pink which combined presumably (speculation) looks pinkish orange.
There's that ambiguous "flint" word! I was just reading a flint thread from the archives. Do you mean American lead glass?
Are you basing these glow colors on how they appear in glass, or on raw minerals?
Manganese in American glass fluoresces greenish. It's actually an activator in its mineral state and fluoresces differently depending on what it's found with.
While some lime fluoresces yellow in its natural state, it can also fluoresce other colors depending on "contaminants." Lime glass doesn't necessarily fluoresce at all.
I didn't know that about the quartz. That's interesting. I imagine minerals found in the quartz could affect its glow color. That would explain the relatively wide variation in colors I've seen my colorless Bohemian glass fluoresce.
Baldwin in Moser Artistry in Glass compares the way Bohemian "crystal" (leadless), Venetian crystal (ditto) and European lead crystal glow in shortwave and longwave UV light. Apparently using the combination he's able to differentiate among the three. He also gives a formula for Bohemian crystal similar to the one you posted but with soda (NaCO3) as well.
I'm fascinated by the variation in the way glass glows in UV. It's something of a controversy in the US whether it actually means anything, or whether it's useful in attribution. I think it can be useful as a tool as long as one is careful about the conclusions one draws from it, and is knowledgeable about it. Glass chemistry is so complex that making inferences about what it contains based on glow color under longwave UV alone is really hard. Manganese, for instance, will only glow in a certain valency state, which is why amethyst glass doesn't glow. In colorless glass it oxidizes (or reduces, I always forget) iron, and in doing so becomes UV reactive.
I suspect the valency state of cadmium is heat-dependent, and that is why only parts of my pitchers glow bright orange (and only the amber part of Anne's goblet).