This is an exceptional specimen of long-fiber chrysotile from an old, now-closed mine known as the "asbestos capital of Canada," Thetford Mine is located in the Appalachian Mountains, 187 km northeast of Montreal and 79 km south of Quebec City.
The specimen showcases a classic vein of chrysotile with cross-fibre crystallization, intermixed with serpentine and magnetite. The fibrous crystals are up to 25 mm long, displaying a beautiful green colour atop the serpentine matrix. This superb vein, cutting across the matrix, is an outstanding example of this much-maligned yet scientifically significant mineral.
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