from The Century Dictionary.
- noun A silicate of beryllium and sodium, HNaBeSi3O8, occurring in colorless twinned orthorhombic crystals of tabular habit: found in southern Greenland. It has the same composition as eudidymite, but differs from it in crystallization.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy An orthorhombic-dipyramidal
mineralcontaining beryllium, hydrogen, oxygen, silicon, and sodium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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