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Franklinite

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QRI783786

Franklinite

Classic Locality

Description Tabs

Description
Locality: 
Sterling Hill, Ogdensburg, Sussex County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 5.4 × 2.4 cm
Largest Crystal: 
0.60cm
Weight: 
46.00gr
Description

A group of modified, slightly rounded franklinite octahedrons cropping out of a carbonate matrix of creamy color. Good lustre and minimal bruising for the crystals. 

It comes from a collector of fluorescent minerals, although I have not tested the specimen myself. Acquired late last year from an Italian collector who gave up collecting.

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

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