Idocrase from Jeffrey Mine, Québec, Canada - image 1
Idocrase from Jeffrey Mine, Québec, Canada - image 2
Updated 22h ago

Idocrase from Jeffrey Mine, Québec, Canada

$135.00

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Attractive cluster of green translucent prismatic terminated vesuvianite crystals without matrix. In great condition. The geology of the Jeffrey Mine in Val-des-Sources, Quebec, is characterized by an extensive ultramafic ophiolite body containing altered peridotite and serpentinite host rocks, which formed the basis for major mineral growth. Discovered in the late nineteenth century, the site evolved into one of the largest open-pit asbestos producers in the world, operated heavily by Johns-Manville for much of the twentieth century. Beyond its commercial industrial output, the mine gained international fame among mineral collectors and museums for yielding world-class specimen crystals, including rare garnets, vesuvianite, and other distinct silicate phases within its fault zones and cavities. Operations expanded massively over decades, directly shaping the surrounding community until global health concerns and market shifts forced its permanent closure in 2012.

Product details

SpeciesIdocraseVesuvianite
SizeThumbnail
Dimensions2.5 x 1.3 x 1.0 cm
Listed on11/07/2026
LocalityCanada, Québec, Jeffrey Mine
SKU2063684

Current owner

WM
Weinrich MineralsFeatured
3,650 for sale·9 sold

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Idocrase from Jeffrey Mine
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Jeffrey Mine
Jeffrey Mine, Canada — storied locality for Ca-silicates from rodingite seams, yielding gemmy orange grossular and vesuvianite; prized by serious collectors.