Heulandite is a zeolite mineral named for Johann Heinrich "John Henry" Heuland. Crystals are often bladed with a pearly luster.
- Optical Properties
- Characteristic Physical Properties
- Chemistry & Crystallography
LWUV: Greenish Blue or Greenish Yellow
Countries of Origin
Angola; Cyprus; Kazakhstan; Portugal; Iceland; Greece; Austria; El Salvador; Unknown; Brazil; Slovenia; Chile; Lesotho; Ecuador; Argentina; Hungary; Japan; Ukraine; Taiwan (Province of China); India; New Zealand; Canada; Turkey; Belgium; Namibia; Faroe Islands; Finland; Italy; South Africa; Antarctica; Peru; Ethiopia; Germany; Tanzania, United Republic Of; Russian Federation; Viet Nam; Czechia; United States of America; Madagascar; United Kingdom of Great Britain and Northern Ireland; Costa Rica; Sweden; China; Ireland; Poland; Slovakia; Bulgaria; France; Jordan; Romania; Uruguay; Philippines; Kenya; Switzerland; Spain; Azerbaijan; Nicaragua; Saint Lucia; Norway; Mexico; Zimbabwe; Australia; Greenland
Specimens need to be handled with care. Heulandite is easily soluble in hydrochloric acid.