$300Median
153Sold (12 mo)
$55Last sale
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Prehnite after Laumontite with Gyrolite
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Classic Indian specimen with crystallized prehnite replacing prismatic crystals of laumontite across the top of matrix. Gyrolite is present as well.The prehnite after laumontite specimens from the Mumbai region of India form within the tholeiitic basalts of the Deccan Traps, specifically associated with the Salsette Subgroup. Geologically, these unique pseudomorphs developed during late-stage hydrothermal alteration and low-grade metamorphism, where mineral-rich fluids circulated through volcanic cavities and coated or replaced earlier-formed prismatic laumontite crystals with a durable layer of green prehnite. Historically, these mineral treasures have been uncovered primarily through industrial quarrying, road construction, and infrastructure expansion across the region, yielding world-class specimens prized by collectors globally.
Product details
SpeciesPrehnite, Gyrolite, Laumontite
SizeLarge Cabinet
Dimensions16.0 x 6.0 x 3.0 cm
Added on09/07/2026
LocalityIndia, Maharashtra, Mumbai City District
Current owner
Unknown Owner
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
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Mineral guide
Learn about Prehnite
apple- to mint-green crystals and sculptural botryoidal/rosette forms; a calcium aluminum silicate formed in low-temp hydrothermal environments.Regional guide
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