from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A monoclinic-prismatic mineral containing boron, calcium, iron, magnesium, oxygen, and silicon.
from the GNU version of the Collaborative International Dictionary of English
- n. A borosilicate of iron and lime, near datolite in form and composition.
from The Century Dictionary and Cyclopedia
- n. A borosilicate of iron and calcium, occurring in black or brownish-black monoclinic crystals near Brevig, Norway. It is closely allied to datolite in form and composition.
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