Rare earth fund includes northern rare earth (600111); Class b (150197); China Merchants Ruiqing flexibly allocates the hybrid securities investment fund Class C (007085); Southern CSI Shenwan Nonferrous Metals Trading Open Index Securities Investment Fund (5 12400). Rare earths are mainly concentrated in alkaline rocks, granites, alkaline ultrabasic rocks and their related deposits.

Physical and chemical properties:

First, there are no sulfides and sulfates (only a few), which shows that rare earth elements love oxygen.

Second, the silicate of rare earth is mainly island-shaped, without layered, frame-shaped or chain-shaped structure.

Thirdly, some rare earth minerals (especially complex oxides and silicates) are amorphous.

4. The distribution of rare earth minerals is mainly silicate and oxide in magmatic rocks and pegmatite, and fluorocarbon and phosphate are mainly in hydrothermal deposits and weathering crust deposits. Most yttrium-rich minerals occur in granite, pegmatite and related gas-water hydrothermal deposits.

5. Rare earth elements are often * * born in the same mineral because of their similar atomic structure, chemistry and crystal chemistry, that is, cerium rare earth elements and yttrium rare earth elements often * * exist in one mineral, but the amount of these elements is * * *, some minerals are mainly cerium-containing rare earth elements, and some minerals are mainly yttrium.

More than 250 kinds of rare earth minerals and minerals containing rare earth elements have been found, and only 10 kinds of industrial minerals are suitable for current smelting conditions.