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Franklinite & Willemite

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TPX1030379

Franklinite & Willemite

Type Locality

Description Tabs

Description
Locality: 
Franklin Mine, Franklin, Sussex County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.8 × 3.6 cm
Weight: 
90.00gr
Description

Spectacular group of franklinite and willemite crystals on a calcite matrix from the type locality.
Willemite activates green under long wave ultraviolet light and I assume that under short wave light it will also fluoresce as well as calcite since it is typical of its locality.

Mineral Data
What's on the rock

Franklinite

Formula: 
Zn2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.0
Colour: 
Black
Type Locality: 
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Willemite

Formula: 
Zn2SiO4
Strunz: 
9.AA.05
Hardness: 
5.5
Streak: 
White
Type Locality: 
Vieille Montagne (Altenberg; Kelmisberg), Moresnet, Kelmis, Plombières-Vieille Montagne District (Plombières-Altenberg), Verviers, Liège Province, Belgium

Current price

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35
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Start 26 Apr 18:00
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Shipping Information

Postage Area Price
Spain
8.50
Europe
13.50
USA
$20.90
Rest of world
18.50

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Bid History

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