Synchysite-(Ce)

Synchysite-(Ce) is a carbonate mineral and an end member of the synchysite group. The general chemical formula is Ca(Ce,La)(CO₃)₂F.^[3]

Synchysite-(Ce)
Synchysite-(Ce) from Poudrette quarry, Mont Saint-Hilaire
General
Category	Minerals
Formula	Ca(Ce,La)(CO3)2F
IMA symbol	Syn-Ce[1]
Strunz classification	5.BD.20c
Dana classification	16a.1.3.1
Crystal system	Monoclinic
Crystal class	Prismatic (2/m) (same H-M symbol)
Space group	C2/c
Identification
Tenacity	Brittle
Mohs scale hardness	4.5
Luster	Vitreous
Diaphaneity	Translucent
Pleochroism	Weak
References	[2]

Discovery and naming

Synchysite-(Ce) was discovered in 1900 by Gustaf Flink.^[4] The name is derived from the Greek "σύγχΰσις", meaning "confounding", a reference to the possibility to confuse the mineral with Parisite-(Ce).

Occurrences

Synchysite-(Ce) is found in rare-earth element bearing pegmatites.^[5] It can also occur as a hydrothermal mineral in granite, alkalic syenite and carbonatite.^[2]