$455Median
25Sold (12 mo)
$600Last sale
Updated 4d ago
Willemite from Franklin, New Jersey, USA
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A double terminated prismatic crystal of willemite with minor attached calcite matrix. In super condition all around. This neat specimen comes with several previous labels, one from the collection of Ray DeMark, and to from the collection of the A. E. Seaman Mineralogical Museum, at Michigan Technological University. These are shown at the end of the video.Franklin, New Jersey, historically renowned as the fluorescent mineral capital of the world, sits within the Franklin Mining District in the New Jersey Highlands. Geologically, the deposit consists of unique, intensely metamorphosed Neoproterozoic ore bodies hosted within carbonate rocks, formed through complex hydrothermal and metamorphic events that concentrated rare zinc, iron, and manganese minerals. The mining history dates back to the mid-17th century for iron exploration, but large-scale commercial extraction of zinc ores began in the 19th century, driven by companies like the New Jersey Zinc Company. Underground operations at the famous Sterling and Franklin mines continued for over a century before closing in the late 20th century, transforming the area into a legendary locality recognized globally for its unmatched diversity of over three hundred mineral species, many of which exhibit brilliant fluorescence under ultraviolet light.
Product details
SpeciesWillemite
SizeMiniature
Dimensions3.0 x 2.0 x 2.0 cm
Added on10/28/2026
LocalityUSA, New Jersey, Franklin
Current owner
Unknown Owner
- Acquired
- Oct 2026
- Price paid
- $600.00
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Willemite
fluorescent zinc silicate with UV glow; daylight colors range from colorless to pistachio, iconic from Franklin–Sterling Hill and Tsumeb.Regional guide
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