Type of fluorite deposit | Lithological association | Rare earth element content of fluorite |
Fluorite deposit associated with felsic igneous rocks | Felsic igneous rocks (granitoids and pegmatite) some time also hosted by surrounding metamorphic country rocks. | Enriched in intermediate to HREEs than LREEs. Yttrium is highly enriched and show strong positive anomaly. These fluorite show a typical relatively flat trend with a prominent negative Eu anomaly. |
Fluorite deposit associated with carbonatite | Carbonatite and alkali igneous rocks | Enriched in LREE concentration than the HREE with lack of negative Eu anomaly. The slight enrichment of the intermediate REEs over LREE and HREE give a convex up pattern for the chondrite normalized REE of the fluorite of this type. Y show positive anomaly. |
Fluorite deposit associated with carbonate sedimentary rocks | Carbonate and other sedimentary rocks | Overall very low but varying REE concentration. Low to moderate negative Ce and Yb anomaly. |