Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
monocliniccommonSilicates (Zeolite group)
Stilbite
NaCa₄Al₈Si₂₈O⇗₂·30H₂O
This specimen features salmon-orange, bladed to sheaf-like crystals of stilbite forming radiating aggregates, with small, vibrant blue cavansite spheres nestled within.
Stilbite Physical Properties
Mohs Hardness
3.5Crystal System
monoclinicLuster
vitreousStreak Color
whiteCleavage
perfect on {010}Fracture
unevenSpecific Gravity
2.15Colors
salmon-orange, white, yellow, brown, pink, colorlessTransparency
translucentType Locality
Pune District, Maharashtra, IndiaMineral Group
Silicates (Zeolite group)Uses
collector's specimens, minor industrial applicationsAssociated Minerals
cavansite, apophyllite, heulandite, gyrolite, prehnite, quartz, calciteRarity
commonGeological Context
Stilbite is a common zeolite mineral typically found in amygdaloidal cavities and fractures within basaltic volcanic rocks, formed through hydrothermal alteration processes. It can also occur in metamorphic rocks and hydrothermal veins.
