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)
cubicuncommonSilicates (Feldspathoid, Sodalite Group)
Hauyne
(Na,Ca)4-8Al6Si6O24(SO4,S,Cl)1-2
This image displays a small, vivid blue, euhedral crystal of Hauyne, likely exhibiting a dodecahedral or pseudo-dodecahedral habit.
Hauyne Physical Properties
Mohs Hardness
5.5Crystal System
cubicLuster
vitreousStreak Color
white to pale blueCleavage
distinct on {110}Fracture
conchoidalSpecific Gravity
2.45Colors
blue, white, gray, green, yellow, redTransparency
transparent to translucentType Locality
Mayen, Eifel Mts, Rhineland-Palatinate, GermanyMineral Group
Silicates (Feldspathoid, Sodalite Group)Uses
collector, gemstoneAssociated Minerals
nepheline, leucite, augite, sanidine, phlogopiteRarity
uncommonGeological Context
Hauyne is a rare feldspathoid mineral typically found in silica-undersaturated alkaline igneous rocks, such as phonolites and tephrites. It forms during the late stages of magmatic crystallization in these volcanic environments.
