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Mineralpedia Details for Kambaldaite

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Kambaldaite

Kambaldaite

Named for Kambalda in Western Australia, where Kambaldaite has its type locality. Kambaldaite is a rare secondary mineral that can be found in goethite residues that was formed by the oxidation of violarite-pyrite with associated carbonates and saline groundwater. Localities for Kambaldaite can be found in, additionally, Austria, and Brazil. 

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/kambaldaite.pdf

Formula
NaNi4(CO3)3(OH)3ยท3H2
Crystal System
Hexagonal 
Crystal Habit
Prismatic, Acicular 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
light green, emerald green 
Streak
light green 
Class
Hexagonal - Pyramidal 
Hardness
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Kambaldaite from 132 North mine, Widgiemooltha, Western Australia, Australia

Kambaldaite
            from 132 North mine, Widgiemooltha, Western Australia, Australia

This is a small piece 1.5cm long of bright green, botryidal Gaspeite with several emerald green, glassy, crystalline spheres of Kambaldaite. The spheres, according to the original description from the Type Locality are composed of prismatic, hexagonal crystals. The 132 North mine is one of a number of small ultramafic hosted nickel sulfide deposits in the Widgiemooltha district. Carbonate minerals are found in the enriched zones. Kambaldaite was originally discovered at the Otter Shoot at Kambalda and the 132 North mine was the second known occurence. 

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