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  • Diamonds and carbonatites in the deep lithosphere ...

    2008-12-19 · each stone, and their trace-element patterns are very similar from stone to stone (> 20 stones analysed). They have CN abundances of the HREE similar to those in the monocrystalline diamonds, but show strong LREE enrichment (La/Nd) CN ≥30), Ba/La) CN 8-10, Zr/Hf) CN and Nb/Ta) CN 0.5-2, Th/U) CN 5-10 and high Mg/Fe.

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  • Diamond Machining Technology

    Sharpal Credit Card Size Diamond Sharpening Stones in this pack each measure 3-1/4' long x 2-1/8' wide x .14' thick. Cards fit easily in pocket or wallet and come in a convenient storage pouch. Industrial monocrystalline diamond is electroplated in nickel onto a steel base for longevity. Pack includes: coarse 325-grit (45-micron) to quickly ...

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