Britholite-(Ce)

(Ce,Ca)(SiO)OH

| formula = (Ce,Ca)(SiO)OH

Description

Britholite-(Ce) is a rare radioactive mineral with the chemical formula (Ce,Ca)5(SiO4)3OH. It comes in a variety of different colors. Its type locality is Naujakasik (Naajakasik), Tunulliarfik Fjord, Ilímaussaq complex, Narsaq, Kujalleq, Greenland.

Chemical Formula(Ce,Ca)(SiO)OH

Crystal SystemHexagonal - Dipyramidal

Mohs Hardness5.5

Specific Gravity4.45

Color| colour = Brown, greenish brown, yellow, resin brown, black

LusterAdamantine - Resinous

Streak| diaphaneity =

Cleavage| fracture =

Fracture| tenacity =

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