$225Median
54Sold (12 mo)
$80Last sale
FLUORAPOPHYLLITE-(K) with Natrolite on Heulandite
Help improve this record
No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.
This superb cabinet-size display specimen of zeolites from Rio Grande Do Sul, Brazil is from a fascinating occurrence, made during the construction of a railroad tunnel in the late 1950s and early 1960s. Large (to 1.9 cm on edge) white to colourless glassy cubic Fluorapophyllite-(K) sit upon a layer of orange-pink small triangular Heulandite crystals lining a large vug in dark grey basalt. Cream coloured needles of Natrolite form delicate acicular sprays scattered upon the surface of the Heulandite within the vug. Reputedly, construction workers driving the Das Antas Tunnel discovered pockets of zeolites and sold them to Mr. Eugênio Giovanella who sold them around the world. It is now really unusual to see zeolites from this occurrence available and even rarer to find larger displayable specimens like this one.
Product details
SpeciesNatrolite, Heulandite
SizeCabinet
Dimensions11.1 x 7.0 x 4.5 cm
Added on10/04/2025
LocalityBrazil, Rio Grande do Sul
Current owner
Unknown Owner
- Acquired
- Jul 2026
- Price paid
- $1,200.00
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Crystal Classics | Not disclosed |
Learn more
Mineral guide
Learn about Natrolite
snowy-white to colorless silky needles forming radiating sprays in basalt cavities; prized for graceful habit, contrast with matrices, and rarity.Regional guide
Comments