synchysite

synchysite

[′siŋ·kə‚sīt]
(mineralogy)
(Ce,La)Ca(CO3)2F A mineral composed of fluoride and carbonate of calcium, cerium, and lanthanum. Also spelled synchisite.
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References in periodicals archive ?
These may include fluorocarbonates (bastnasite and synchysite) and even REE-bearing fluorite.
Mariano reports that drill core samples from SL-11-03 (8.0 m depth) were examined briefly for mineralogy and mode of occurrence and concludes that the sample consist of dispersed clusters of fine-grained synchysite. He states that the work conducted so far is preliminary and also reports that this section of core was visually similar to much of the core from the initial two holes that were examined during his field visit on July 12, 2011.
Rare earth carbonate minerals synchysite and bastnasite have been observed in samples of fresh, unweathered carbonatite beneath this weathered profile.
Mineralogical work completed by the company indicated that a wide variety of rare-earth element-bearing minerals have been identified, including apatite, iimoriite, kainosite, gadolinite, allanite, bastnaesite, parisite, brannerite, thalenite, xenotime, fergusonite, synchysite (Y), and monazite.
In these minerals, the Ba and REE cations are ordered, like Ca and REE in parisite, synchysite and rontgenite, whereas Sr,REE carbonates with bastnasite-like structures are unknown.
(1953) The crystallography of bastnasite, parisite, rontgenite and synchysite. American Mineralogist, 38, 932-963.
(1953) The crystallography of bastnaesite, parisite, roentgenite and synchysite. American Mineralogist, 38, 932-963.
A number of good specimens of bicolored elbaite and schorl were recovered, along with a number of other rare and interesting minerals including clinobisvanite, stibiotantalite, danburite, hambergite, pyrochlore, and synchysite (DeVito and Ordway, 1984).
Synchysite was reported together with anatase from Christiansstoll by Saebo and Neumann (1961).