Your obsessed with this fluorite stuff aren't you? You just can't get enough of it, can you? I bet you know which brand of tooth paste and which flavor variants have the highest content of fluorite in parts per million off by heart.
Traditionally, eyepiece manufacturers are "hush-hush" about what the content and makeup of the glass they use in their eyepieces. We know Pentax and Vixen market Lanthanum as a major component of their eyepieces. But, manufacturers like Televue as far as I know have never published that information.
I'm surprised you don't know the answer to your own question. If I was going to ask this question you would have been the first person I would have asked.
