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Uraninite & Gummite

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UVM597002

Uraninite & Gummite

Radioactive

Description Tabs

Description
Locality: 
Ruggles Mine, Grafton, Grafton County, New Hampshire, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 3 × 2.5 cm
Description

A beautiful specimen of uraninite with gummite from the Ruggles Mine.   This specimen features black grains of uraninite with it's colorful secondary minerals, referred to as "gummite".   Quite attractive under magnification and to the naked eye.

 

Mineral Data
What's on the rock

Uraninite

Formula: 
UO2
Strunz: 
4.DL.05
Crystal System: 
Isometric
Hardness: 
5.0 - 6.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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