description Natrolite Overview
Natrolite is a zeolite-group tectosilicate mineral with the hydrated sodium aluminosilicate formula Na2Al2Si3O10·2H2O. It commonly forms colorless or white, slender needle-like crystals and can occur as radiating or fibrous aggregates in cavities and fractures of volcanic rocks. Natrolite is orthorhombic, has a Mohs hardness of about 5 to 6, and is commonly collected as a mineral specimen; its acicular habit accounts for the older name 'needle-zeolite'.
help Natrolite FAQ
What is natrolite?
Natrolite is a zeolite-group tectosilicate mineral. Its hydrated sodium aluminosilicate formula is Na2Al2Si3O10·2H2O.
What do natrolite crystals look like?
Natrolite commonly forms colorless or white, slender needle-like crystals. It can also occur as radiating or fibrous aggregates.
Where does natrolite form?
Natrolite occurs in cavities and fractures of volcanic rocks. Those spaces allow its needle-like crystals and radiating aggregates to develop.
What mineral group does natrolite belong to?
Natrolite belongs to the zeolite group of tectosilicate minerals. Its structure contains hydrated sodium, aluminum, and silicate components.
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