# How does tourmaline produce negative ion ?

1. Sep 27, 2011

### lnsanity

How does tourmaline produce negative ions ?

Where those negative ions come from ?

I know that negative ions is simply atoms with 1 extra electron so where they come from ?

I also know that volcanic ash also produce negative ion same question ?

2. Sep 28, 2011

### Staff: Mentor

If you don't get any answers here try the general or classical forums, as this isn't a purely quantum physics question.