Here's something that not every CardinKid is aware of.  A few, including
 me,  have seen it.  On the Mall, Washington, D. C., in the Museum of
Natural History,  the tri-state mining district has a display on the  second floor.
 The top left samples come from Hockerville, while the ones on the right are from Joplin

    The lower left sample is from the Woodchuck mine,
 CARDIN, OKLAHOMA.  I discovered this in 1963,
and took these pictures in 1981.  If I had known then
 what I know now, I would have taken a better picture. 
 I already have a request in for more detailed pictures,
and when I get them, they'll be here.