Britholite-(Ce)
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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.
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Britholite-(Ce) | |
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General | |
Category | Mineral |
Formula (repeating unit) | (Ce,Ca)5(SiO4)3OH |
IMA symbol | Bri-Ce[1] |
Crystal system | Hexagonal - Dipyramidal |
Space group | P63/m |
Identification | |
Colour | Brown, greenish brown, yellow, resin brown, black |
Mohs scale hardness | 5.5 |
Luster | Adamantine - Resinous |
Specific gravity | 4.45 |
Density | 4.45 |
Major varieties | |
hardness | 5.5 on the Mohs scale |
type locality | Naujakasik(Naajakasik), Tunulliarfik Fjord, Ilímaussaq complex, Narsaq, Kujalleq, Greenland |
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