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Heulandite series (Photo) [abbr. Hul ]

Year of discovery: 1831 (Japan)

Locality list: 194 localities of heulandite

• [ A⁺ ][ B²⁺₄ ][(AlSi₃O₈)₉],24H₂O

• [ Na ][ Ca ]: Heulandite-Ca
• [ K ][ Ca ]: Heulandite-K
• [ Na ][ Na₂ ]: Heulandite-Na
• [ Na ][ Sr ]: Heulandite-Sr
• [ Na ][ Ba ]: Heulandite-Ba

• Class: Heulandite group < Zeolite family
• A⁺B²⁺Al₃ => Si₃: Clinoptilolite series

• Class: Tecto-Aluminosilicate - Zeolitic Water