5 Comments
User's avatar
Pat Dickerson's avatar

Another enlightening column, Richard. (Glad to know that parisite does not feed on other minerals...)

Expand full comment
Lynne Dickman's avatar

It will set off a Geiger counter. Don’t sleep with it. I notice you didn’t include uranium in the chemical makeup.

Expand full comment
Richard I Gibson's avatar

I wouldn't doubt there might be trace impurities of uranium or thorium in it, but uranium is not an essential element in parisite's chemical definition.

Expand full comment
Mike Reinke's avatar

Those are some nice parisites.

I would find what I called synchysite in the red granites that washed up on lake Michigan but they were all micros, 2 mm tops.

Still, a cool find.

Expand full comment
Richard I Gibson's avatar

The main reason I say parisite is that I believe all analyses from the locality show parisite, and I don't think synchysite has been reported.

Expand full comment