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Britholite-(Ce) is a rare radioactive mineral with the chemical formula (Ce,Ca)(SiO)OH. It comes in a variety of different colors. Its
type locality Type locality may refer to: * Type locality (biology) * Type locality (geology) See also * Local (disambiguation) * Locality (disambiguation) {{disambiguation ...
is Naujakasik (Naajakasik), Tunulliarfik Fjord,
Ilímaussaq complex The Ilimaussaq intrusive complex is a large alkalic layered intrusion located on the southwest coast of Greenland. It is Mesoproterozoic in age, about 1.16 Ga. It is the type locality of agpaitic nepheline syenite and hosts a variety of unusual ...
, Narsaq, Kujalleq, Greenland.


Discovery

The mineral was first discovered by
Gustaf Flink Gustaf Flink, born 18 January 1848 in Ås Parish, Skaraborg County, died 11 January 1931, was a Swedish mineralogist.Flink, G.
in ''
in 1897 inside a
nepheline-syenite Nepheline syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar. The rocks are mostly pale colored, grey or pink, and in general appearance they are not unlike granites, but dark green varieties are al ...
at Naujakasik,
Ilímaussaq complex The Ilimaussaq intrusive complex is a large alkalic layered intrusion located on the southwest coast of Greenland. It is Mesoproterozoic in age, about 1.16 Ga. It is the type locality of agpaitic nepheline syenite and hosts a variety of unusual ...
, Greenland. It was named after the Greek word βρῖθος (''brithos'') which means "weight" referring to its high specific gravity, it was later named birtholite-(Ce) due to the high amounts of cerium in its composition.


References


External links


"Britholite-(Ce) Mineral Data"
Minerals Hexagonal minerals Minerals in space group 176 Radioactive minerals Silicate minerals {{Mineral-stub