Formula :
Ca(Ce,La)[F/(CO3)2]
System: orthorhombic Hardness:4½ Rarity:not common
Strunz id:V/C.7-110 -
NITRATES, CARBONATES and BORATES
Name origin: From the Greek "synchys" for "confounding" in allusion to its initially being mistaken for parisite, and the "-(Ce)" suffix due to the dominance of cerium in the composition.
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