[meteorite-list] Membrane Cases, Care and Feeding of

[Linton Rohr]

Greetings esteemed listoids,
I'm trying to figure out a safe way to remove some minor - but annoying - 
rust stains (Brenham slice) from the membrane surface of a case. I'm afraid 
to try any solvents for fear of melting the membrane, which would be a "cure 
worse than the disease". Has anyone out there already solved this dilemma? 
I'd certainly be indebted.
Linton