Formula :
(Ca,Na2,K2)[AlSi5O12]2 * 7 H2O
System: orthorhombic,monoclinic Hardness:4-5 Rarity:not common
Strunz id:VIII/J.22-30 -
SILICATES
Name origin: An unnamed K-dominant "mordenite" seems to exist in nature (e.g., Lo et al., 1991; Lo & Hsieh, 1991; Coombs et al., 1997; Sun et al., 2003). It is well-known as a synthetic compound.
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