$450Median
2870Sold (12 mo)
$140Last sale
Updated 3d ago
Willemite with Calcite, Franklinite
Help improve this record
No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.
Somewhat rounded but very nice lustrous crystals of willemite to 1.5 cm in size embedded throughout a massive pink calcite matrix. Small grains of black franklinite are scattered throughout. In great condition brightly fluorescent. The specimen comes with a previous label from the collection of Ray DeMark.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
SpeciesCalcite, Franklinite, Willemite
SizeSmall Cabinet
Dimensions6.0 x 5.0 x 4.5 cm
Added on09/30/2026
LocalityUSA, New Jersey, Franklin
Current owner
Unknown Owner
- Acquired
- Oct 2026
- Price paid
- $140.00
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Calcite
diverse shapes, colors, and optical quirks; widely available yet scarce elite pieces from Elmwood and Charcas drive collecting value and display.Regional guide
Comments