WILLEMITE & FRANKLINITE FLUORESCENT SPECIMEN - NJ
📏 Size: 4.3 in (10.9 cm)
⚖️ Weight: 8.6 oz (244 g)
📍 Locality: Franklin, Sussex County, New Jersey
📦 Combine & Save!
Each additional specimen ships for only $1 more (shipping overages refunded after checkout)
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💎 Description
This Franklin, NJ specimen presents a dense, granular matrix with a fine sparkle of reflective crystal faces across its surface, interrupted by darker, more massive patches typical of this classic zinc ore assemblage. The texture is compact and sturdy, with a rugged, naturally broken profile that stands well on display.
Under ultraviolet light the piece transforms — vivid green willemite fluorescence spreads across the surface under both longwave and shortwave UV, while the non-fluorescent franklinite remains dark, creating a mottled, high-contrast glow that traces the distribution of each mineral through the matrix.
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🌍 Composition
• Willemite — Zn₂SiO₄; fluoresces vivid green under both LW and SW UV
• Franklinite — ZnFe₂O₄; opaque and non-fluorescent, appearing as dark patches against the glowing willemite
• Natural, untreated specimen from Franklin, Sussex County, New Jersey
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✨ Features
• Vivid green willemite fluorescence under UV
• Strong dark/light contrast between fluorescent willemite and inert franklinite
• Dense, granular ore-type texture typical of Franklin material
• Bright, consistent response under both LW and SW UV
• Compact, sturdy specimen well-suited for display
• Locality: Franklin, Sussex County, New Jersey
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🔦 Fluorescence
• LW UV (Lumenbeast 365nm): Vivid green willemite fluorescence, franklinite remains dark
• SW UV (Stimac Engineering 255nm): Vivid, saturated green willemite fluorescence, franklinite remains dark
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📸 Photography Notes
Photos taken under natural lighting and UV illumination — appearance shown exactly as observed. No color enhancement or saturation adjustments.
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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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