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Franklinite & Zincite

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WND862340

Franklinite & Zincite

Rare Mineral - Type Locality
Classic Locality

Description Tabs

Description
Locality: 
Franklin Mine, Franklin, Sussex County, New Jersey, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.7 × 5.8 × 3.1 cm
Description

This classic Franklin specimen consists of a large part of grainy reddish-brown Zincite and metallic, lead gray Franklinite. The second species is showing some crystal faces as well. A good and typical specimen from the old time New Jersey locality. For both species, the Franklin Mine is type 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

Zincite

Formula: 
(Zn,Mn2+,Fe2+)O
Strunz: 
4.AB.20
Crystal System: 
Hexagonal
Hardness: 
4.0
Type Locality: 
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA
Wendel Minerals

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