History · Geology
About Kola Peninsula Alkaline Complexes
The Kola Peninsula in northwestern Russia hosts some of the world’s largest alkaline-ultramafic-carbonatite complexes — Khibiny, Lovozero, Kovdor, Vuoriyarvi — collectively containing more rare-element-mineral type localities than any other comparable region on Earth. Over 500 mineral species are recorded.
Geology
The Kola alkaline province formed during Devonian extensional tectonism (~360 Ma), producing a series of peralkaline syenite, ijolite, urtite, and carbonatite intrusions enriched in K, Na, Sr, Ba, REE, Nb, Ta, Zr. The unique chemistry produces minerals found nowhere else.
Notable Minerals
Uvarovite (gem-green Cr garnet — Saranovskoye chromite mine), lazurite (lapis lazuli grade — Slyudyanka, Pribaikalye), aegirine (long black needles), apatite/fluorapatite (large blue and green crystals), eudialyte (red Zr silicate, Lovozero classic), feldspar, olivine, phlogopite, magnetite, plus dozens of type-locality rare species.
Collector Notes
Kola specimens are standard reference material for alkaline-rock mineralogy worldwide. Saranovskoye uvarovite — 1-3 cm gem-green dodecahedra in chromite matrix — is exclusive to this region.
Minerals Produced Here
- Aegirine (霓辉石)
- Fluorapatite (氟磷灰石)
- Magnetite (磁铁矿)
- Phlogopite (金云母)
- Uvarovite (钙铬榴石)
