from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An uncommon monoclinic manganese iron phosphate mineral.
from the GNU version of the Collaborative International Dictionary of English
- n. A manganese phosphate near triplite, but containing hydroxyl instead of fluorine.
from The Century Dictionary and Cyclopedia
- n. A phosphate of iron and manganese occurring in monoclinic prismatic crystals, also in columnar to fibrous masses of a reddishbrown color. It closely resembles triplite, but differs from it in having the fluorin replaced by hydroxyl.
triplite (which it resembles) and -oid. (Wiktionary)