Stilbite with Fluorapophyllite-K

specimen number:
2262115

location:
Jalgaon, Maharashtra, India

description:
Attractive combination piece with double terminated crystals of stilbite to 4.5 cm in size on a cluster of glassy gemmy colorless crystals of fluorapophyllite. This is in good condition.

Jalgaon, located in the Maharashtra state of India, is situated within the expansive Deccan Traps, one of the largest volcanic provinces in the world. Geologically, the region is defined by thick layers of basaltic lava flows that cooled during the late Cretaceous period, creating numerous gas bubbles or vesicles that were later filled by secondary minerals through hydrothermal activity. While industrial mining and quarrying in the area are primarily focused on the extraction of basalt for construction aggregates and road materials, Jalgaon is globally famous for its "quarry minerals," specifically world-class zeolite specimens like stilbite, apophyllite, and heulandite. Historically, the systematic recovery of these minerals gained international prominence in the mid-20th century, particularly from the 1970s onward, as infrastructure projects and stone quarries uncovered spectacular crystal pockets. Unlike traditional metal mines with fixed closing dates, the "mining" of these specimens continues as a byproduct of active basalt quarrying, making the region a primary global supplier for mineral collectors through 2026. The area remains a vital site for studying the late-stage volcanic cooling processes and the formation of complex silicate minerals within igneous host rocks.

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