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)
monoclinicuncommonSilicates
Epistilbite
CaAl2Si6O16·5H2O
This specimen features a cluster of white to colorless, translucent Epistilbite crystals, often forming radiating or sheaf-like aggregates.
Epistilbite Physical Properties
Mohs Hardness
3.5Crystal System
monoclinicLuster
vitreousStreak Color
whiteCleavage
perfect on {010}Fracture
unevenSpecific Gravity
2.22Colors
white, colorless, yellowish, reddishTransparency
transparentType Locality
Jalgaon District, Maharashtra, IndiaMineral Group
SilicatesUses
collectorAssociated Minerals
stilbite, heulandite, scolecite, apophyllite, calcite, quartzRarity
uncommonGeological Context
Epistilbite is a zeolite mineral that forms in the cavities and fissures of basaltic volcanic rocks, typically as a result of hydrothermal alteration of primary minerals.
