from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. natrolite
from the GNU version of the Collaborative International Dictionary of English
- n. Natrolite; -- called also needle zeolite.
from The Century Dictionary and Cyclopedia
- n. A name given by the older mineralogists to acicular varieties of natrolite, scolecite, and other minerals.
needle + stone (Wiktionary)
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