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Native Gold Malachite Brochantite & Friedelite

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BCK678471

Native Gold Malachite Brochantite & Friedelite

George Elling collection
Classic Locality

Description Tabs

Description
Locality: 
Sterling Mine, Ogdensburg, Sussex County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 1.8 × 1.3 cm
Description

You are bidding on a small sample with a tiny wire of native gold in magnetite with vugs hosting small radial balls of malachite, darker green brochantite blades and crusts of sharp orange friedelite crystals. Native gold is very rare in the Franklin Mines. 

Mineral Data
What's on the rock

Gold

Formula: 
Au
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Brochantite

Formula: 
Cu4(SO4)(OH)6
Strunz: 
7.BB.25
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...

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...

Seller Information

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