Willemite and calcite
Willemite: FL green
Calcite: FL red
Zincite and Franklinite: Non-FL

Here are 3 specimens of willemite and calcite from the Mine Run Dump at Sterling Hill, Ogdensburg, NJ. The largest one weighs 4 or 5 pounds.

Willemite and calcite form such an endless variety of fluorescent patterns that a person could build a great collection from nothing but "red and green". Though it's nice to have some of the more unusual fluorescent minerals in a collection, you'd be severely lacking without a few nice chunks of willemite and calcite.
Collected 2000-2002 at Sterling Hill, Ogdensburg, New Jersey. Photo by C. Thorsten.
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