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heulandite
[ hyoo-luhn-dahyt ]
noun
- a white or transparent, colorless mineral of the zeolite family, hydrous calcium aluminum silicate, CaAl 2 Si 7 O 18 ⋅6H 2 O, occurring in basic volcanic rocks in the form of crystals with a pearly luster.
heulandite
/ ˈhjuːlənˌdaɪt /
noun
- a white, grey, red, or brown zeolite mineral that consists essentially of hydrated calcium aluminium silicate in the form of elongated tabular crystals. Formula: CaAl 2 Si 7 O 18 .6H 2 O
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Word History and Origins
Origin of heulandite1
1815–25; named after Henry Heuland, 19th-century English mineral collector; -ite 1
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Word History and Origins
Origin of heulandite1
C19: named after H. Heuland, 19th-century English mineral collector; see -ite 1
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Example Sentences
Heulandite is distinguished from stilbite by its crystals and perfect solubility; from apopholite by form of crystals.
From Project Gutenberg
Isomorphous with heulandite is the strontium and barium zeolite brewsterite, named after Sir David Brewster.
From Project Gutenberg
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