A Geoscience Digital Image Library

TitleNickeline (niccolite) and dyscrasite from Cobalt, Ontario, Canada
DescriptionMost of the gray material in this sample is dyscrasite, Ag3Sb (silver antimonide). Dyscrasite may be metallic and silver colored when fresh, but it rapidly tarnishes when exposed to air. The copper colored mineral is nickeline, NiAs (nickel arsenide). These are important ore minerals for nickel (Ni), silver (Ag) and antimony (Sb). This sample comes from a mine at Cobalt, Ontario, and is 8 cm across.
LocationCanada ▹ Ontario. Near Cobalt.
PhotographerDarla Sondrol. 2001-07-10.
CollectionUniversity of North Dakota Mineralogy Collection #157.
Key wordsniccolite, nickeline, dyscrasite, Ontario, Canada
Tech details797 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number1107