Initial conditions for a fluorine hellscape

I'm curious what it would take to get a planet with so much free fluorine that you can have an atmosphere of predominantly or purely fluorine. I realize how improbable a planet like this is, so I'm looking for the long set of perhaps contradictory conditions that would lead to a hellscape planet like this. How do I get a planet sized ball of fluorine ash products and an atmosphere of fluorine to go with it?

Planet parameters:

1. Earth-like in mass.
2. Surface atmosphere of one bar
3. Atmosphere is >70% fluorine

Points in a good answer :

1. Organization and evolution of the proto planetary disk.
2. Processes required to concentrate enough fluorine in one place to get a fluorine planet and fluorine atmosphere.

Out of Scope

1. Questioning the question :) I know this planet is crazy and highly improbable. Don't tell me why it can't work. Tell me why it can and what it would take.
2. Life. Whether this planet will support life doesn't matter to this question.
3. Evolution of the planet past initial formation.

posted almost 7 years ago

Green‭

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