Davidite-(Ce)

davidite-(Ce)

gadolinite

euxenite

thortveitite

Images

Formula: Ce(Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH,F)₃₈
Multiple oxide, crichtonite group, cerium-, yttrium-, uranium-, titanium, chromium and vanadium- bearing mineral
Crystal System: Trigonal
Specific gravity: 4.29 measured
Hardness: 6
Streak: Greyish black
Colour: Black
RADIOACTIVE
Environments

Pegmatites

Davidite-(Ce) occurs in a pegmatite dike, rich in rare-earth minerals, in granite. Associated minerals include ilmenite, rutile, gadolinite, euxenite, thortveitite, xenotime, allanite and zircon (HOM).

Localities

At the type locality, Frikstad 03 Feldspar Quarry, Frikstad, Iveland, Agder, Norway, davidite-(Ce) occurs in a granite pegmatite (Mindat). A specimen has been found which is a crystal fragment of davidite-(Ce) with a bit of adhering quartz and mica (AM 46.700-718).

Davidite-(Ce) from Frikstad - Image

At Pit No. 97, Miass, Chelyabinsk Oblast, Russia, polyakovite-(Ce) is of hydrothermal origin, and associated with calcite, dolomite, fluoro-richterite, phlogopite, forsterite, monazite-(Ce), clinohumite, chromite and davidite-(Ce) (CM 39.4.1095-1104).

Back to Minerals