from The Century Dictionary.
- noun A native hydrous iron phosphate, generally massive with radiated fibrous structure. It has a dark-green color, but changes on exposure to yellow or brown.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A mineral of a blackish green color, commonly massive or in nodules. It is a hydrous phosphate of iron.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A blackish-green
mineralthat is a hydrous phosphateof iron.
from Wiktionary, Creative Commons Attribution/Share-Alike License
Dufrénoy + -ite, after French geologist Pierre Armand Dufrénoy.
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