Wöhlerite

minerals

zirconium

zirconolite

rosenbuschite

Formula: Na2Ca4Zr(Nb,Ti)(Si2O7)2(O,F)4
Sorosilicate (Si2O7 groups), wöhlerite group, zirconium-bearing mineral
Specific gravity: 3.40 to 3.44
Hardness: 5½ to 6
Streak: Yellowish white
Colour: Light to dark yellow, brown, grey
Common impurities: Ti,Hf,Al,Y,Ce,La,Fe,Ta,Mn,Mg,Sr
Environments

Plutonic igneous environments
Pegmatites
Carbonatites
Metamorphic environments

Wöhlerite occurs as a late phase in alkaline pegmatites, an accessory mineral in syenite and nepheline syenite, in fenite associated with alkaline intrusives and in carbonatites (HOM, Dana, Webmin, Mindat).
Associated minerals include cancrinite, ferro-hornblende, aegirine, astrophyllite, mosandrite, eudialyte, catapleiite, rosenbuschite, lavenite, zircon, pyrochlore, latrappite, niobian perovskite, niobian zirconolite, albite, nepheline, biotite and fluorite (HOM).

Localities

At the type locality, Løvøya, Langesundsfjorden, Porsgrunn, Telemark, Norway, wöhlerite occurs in a syenite pegmatite (Mindat).

Back to Minerals