STRIKING Calcite, Willemite & Franklinite Fluorescent Trio from Sterling Hill, NJ
📏 Size: 3.7 in (9.4 cm)
⚖️ Weight: 1 lb 0.4 oz (465 g)
📍 Locality: Sterling Hill Mine, Ogdensburg, Sussex County, New Jersey, USA
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💎 Description
In daylight, this Sterling Hill specimen shows a white calcite matrix packed with lustrous black franklinite crystals and rich reddish-brown willemite zones spread across the face. The warm red-brown tones make this one of the more colorful daylight pieces from the locality.
Under shortwave, the specimen erupts into a dense interlocking mosaic of bright electric green willemite and vivid red-orange calcite, with the black franklinite crystals holding sharp dark contrast between them. The willemite runs heaviest along one end while calcite takes over toward the other, giving the face a dynamic green-to-red flow. Under longwave the calcite stays bold as a hot pink-red across much of the surface, while the willemite softens to yellow-green patches concentrated along the same end.
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🌍 Composition
• Calcite — CaCO₃ — vivid red-orange under SW UV, hot pink-red under LW UV
• Willemite — Zn₂SiO₄ — reddish-brown in daylight, bright electric green under SW UV, softer yellow-green under LW UV
• Franklinite — ZnFe₂O₄ — non-fluorescent at both wavelengths, black crystals providing contrast
• Natural, untreated specimen from the Sterling Hill Mine, Ogdensburg, NJ
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✨ Features
• Dense interlocking green and red-orange mosaic under SW UV
• Dynamic green-to-red color flow across the display face
• Colorful daylight appearance with reddish-brown willemite, white calcite, and black franklinite
• Strong calcite response under LW UV as well
• Solid hand-specimen size at 3.7 in and 1 lb 0.4 oz
• Sourced from the historic Sterling Hill Mine, Ogdensburg, Sussex County, NJ, one of the world's most famous fluorescent mineral localities
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🔦 Fluorescence
• LW UV (Lumenbeast 365nm): calcite hot pink-red; willemite softer yellow-green; franklinite non-fluorescent
• SW UV (Stimac Engineering 255nm): willemite bright electric green; calcite vivid red-orange; franklinite non-fluorescent
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📸 Photography Notes
Photos taken under natural lighting and UV illumination. No color enhancement or saturation adjustments — appearance shown exactly as observed.
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📦 Shipping & Guarantee
• Ships securely padded
• Combined shipping available
• Ships within 1 business day
• 30-day satisfaction guarantee
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