from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A yellowish to reddish-brown mineral, (Ce,La)CO3(F,OH), that is a source of rare-earth elements, including gadolinium, samarium, and neodymium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A yellow-brown mineral that is a source of several rare earth metals, especially gadolinium, samarium, and neodymium.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a yellow-to-brown mineral that is a source of rare earth elements
PLS from an ore concentrate that it has not yet determined can be produced, with an extraction efficiency that it has not yet determined to be economical - this additional HREE-containing PLS will be run simultaneously or on top of the PLS derived from the Mountain Pass bastnaesite concentrate - which has not yet been run in the new plant.
The rare earth minerals bastnaesite and monazite have been confirmed at the Shark Bowl occurrence.
We were cocksure to cheese gift to panoply onwards but the tongueless overblown us from strindberg the absorptance, so we get an properly schizoid in bastnaesite.
By contrast, Dotson Ridge is characterized by steeply dipping pegmatitic and aplitic dikes variably mineralized with REE minerals including kainosite, xenotime, allanite, bastnaesite, thalenite, synchisite, and fergusonite.
These minerals define a series of REE fluorocarbonates characterized by increasing REE content within their structures from synchisite to bastnaesite.
Scanning electron microprobe using qualitative analyses and semi-quantitative spectroscopy identified bastnaesite, parasite-synchisite as the main minerals of interest.