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Hendricksite Bustamite & Andradite On Willemite

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FCM685476

Hendricksite Bustamite & Andradite On Willemite

Rare Mineral

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: 
5.8 × 6.4 × 3 cm
Description

This is a nice combination piece with rare, dark coppery brown hendricksite, pink bustamite and brown andradite on a fluorescent (SW UV) willemite matrix.  Hendricksite is the only Zn containing mica species.

Mineral Data
What's on the rock

Hendricksite

Formula: 
K(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2
Strunz: 
9.EC.20
Hardness: 
0.0
Type Locality: 
Buckwheat pit (Southwest opening; Buckwheat Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Bustamite

Formula: 
CaMn2+(Si2O6)
Strunz: 
9.DG.05
Hardness: 
5.5 - 6.5
Streak: 
White
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

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

Seller Information

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