Silver with Dolomite, Skutterudite

specimen number:
2062132

location:
Langis Mine, Cobalt, Ontario, Canada

description:
A cut and polished slab showing rich crystalline native silver throughout with dolomite and skutterudite. Classic material for this area.

The Langis Mine, located in Casey Township near New Liskeard and north of the main Cobalt silver camp in Ontario, Canada, was a significant producer within the northern extension of the Timiskaming silver district. Geologically, the mine is situated where the Proterozoic Cobalt Group sediments and underlying Archean volcanic rocks were intruded by the Nipissing Diabase sill. Silver mineralization occurred in narrow, near-vertical carbonate veins containing native silver and a complex suite of cobalt-nickel-iron arsenides, which formed as hydrothermal deposits approximately 2.2 billion years ago. Historically, the property was first worked as the Casey Cobalt Mine starting around 1906, but it saw its most consistent and modern period of operation as the Langis Silver and Cobalt Mining Company from 1956 until 1968. Small-scale production and extensive exploration continued into the late 1980s and early 1990s as silver prices fluctuated. The Langis Mine is well-regarded by collectors for producing high-grade native silver in both leaf and wire forms, as well as rare minerals like safflorite and skutterudite, characteristic of the unique Cobalt-style mineralization.

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