Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Neltnerite

Views:
Watches:
ESM563416

Neltnerite

Type Locality

Description Tabs

Description
Locality: 
Manganese Mine, Copper Harbor, Keweenaw County, Michigan, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3.7 × 3.2 cm
Description

Lustrous silvery-black neltnerite crystals

Mineral Data
What's on the rock

Neltnerite

Formula: 
CaMn3+6(SiO4)O8
Strunz: 
9.AG.05
Crystal System: 
Tetragonal
Hardness: 
6.0
Colour: 
black
Streak: 
black
Type Locality: 
Tachgagalt Mine, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco