Stilbite /apophylite Specimen AGR1457

Description

Specimen from India

natural specimen

size is appro

Ca0.5,Na,K)9[Al9Si27O72]·28H2O Stilbite crystals are thin and tabular, but they often occur in distinctive wheatsheaf- or bow tie-shaped clusters, or in spherular aggregates. The crystals are colourless, white, pink, red, yellow, or brown. Stilbite occurs with other zeolites in cavities in basalts, and andesites, and is found in some metamorphic and sedimentary rocks too.