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Kraisslite With Willemite & Franklinite

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LGM129933

Kraisslite With Willemite & Franklinite

ex Ring collection, Munich,Germany
Type Locality

Description Tabs

Description
Locality: 
Franklin, Sussex County, New Jersey, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 3.8 × 2.1 cm
Description

Scaly, golden brown kraisslite coating fracture surface in typical franklinite-willemite ore (green fluorescence).

Mineral Data
What's on the rock

Kraisslite

Formula: 
Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16
Strunz: 
8.BE.45
Crystal System: 
Hexagonal
Hardness: 
3.0 - 4.0
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

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

Seller Information

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