1. The isotopic composition of ikaite and the pseudomorphs is actively studied. 2. Obviously ?M is depends on the precise isotopic composition for a given molecule. 3. isotopic compositions which are common with Martian composition, and differ from Earth compositions.4. Siderite is commonly found in isotopic composition of meteoric water shortly after deposition. 5. Hence the isotopic composition of lithium can vary somewhat depending on its source. 6. Soon thereafter, Alfred Nier reported natural variation in the isotopic composition of carbon. 7. The isotopic compositions for which this effect is predicted are called resonance isotopic compositions. 8. Anderson developed an alternative model of the mineralogical and isotopic composition of the mantle. 9. The isotopic compositions for which this effect is predicted are called resonance isotopic compositions . 10. Analysis of Ne in some meteorites showed that they had a widely variable isotopic composition .
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