mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Polydymite

#AK58139

Polydymite

#AK58139
Availability
Sold
Size
4.5 x 3.5 x 3.5 cm - Miniature 
Formula
Ni3S4 (RRUFF)
Locality
Sudbury dist., Ontario, Canada
Tagged
ore specimen , nickel

This is a chuck of nickel ore from one of the greatest nickel deposits of the world. Mindat states that the deposit is "a giant polymetallic deposit hosted within one of the Earth's largest impact craters (diameter 250 km). Initially discovered in 1856, but the main development started in 1883.

Polydymite is silvery when fresh with alteratins to Annabergite. It has a density of 4.8 and a hardness of 4.5 to 5.5.

Polydymite

Formula
Ni3S4 
Crystal System
Isometric 
Crystal Habit
Twinning Common, Massive - Granular, Octahedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
violet gray, copper red, light gray, steel gray 
Streak
black gray 
Class
Isometric - Hexoctahedral 
Fracture
Conchoidal - Uneven 
Hardness
4.5-5.5 

Data courtesy of Webmineral.

Collection
Al Kidwell Collection

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2024 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map