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Friedelite Willemite & Hetaerolite

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BCK823685

Friedelite Willemite & Hetaerolite

Steven Phillips collection
Rare Mineral

Description Tabs

Description
Locality: 
Sterling Hill, Ogdensburg, Sussex County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 0.9 × 0.8 cm
Description

You are bidding on a small sample with nice crystals of equant friedelite on matrix with willemite prisms and black hetaerolite. From the Stephen Phillips collection of Franklin/Sterling Hill rarities. 

Mineral Data
What's on the rock

Friedelite

Formula: 
(Mn,Fe)8Si6O15(OH,Cl)10
Strunz: 
9.EE.10
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
Montagne d'Azet, Aderville, Louron Valley, Hautes-Pyrénées, Midi-Pyrénées, France...

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

Hetaerolite

Formula: 
ZnMn2O4
Strunz: 
4.BB.10
Hardness: 
6.0
Colour: 
Black
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Seller Information

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