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Magnussonite With Zincite & Franklinite & Willemite & Calcite

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LGM880538

Magnussonite With Zincite & Franklinite & Willemite & Calcite

Ex Erberto Tealdi, Milano, Italy
With Antique Label

Description Tabs

Description
Locality: 
Sterling Hill, Ogdensburg, Sussex County, New Jersey, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
6 × 7.5 × 3 cm
Weight: 
320.00gr
Description

Masses of brown magnussonite as part of a vein, associated with bright orange-red, crystalline zincite "sprays". The matrix rock consists of manganoan calcite, franklinite and willemite.
Shows the usual green SW fluorescence of willemite.

From the famous Erberto Tealdi collection, Milano, Italy.
Sterling Hill is the type locality both for franklinite and zincite.

Mineral Data
What's on the rock

Magnussonite

Formula: 
Mn10As6O18(OH,Cl)2
Strunz: 
4.JB.15
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Långban, Filipstad, Värmland, Sweden

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

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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