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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Sintering polycrystalline olivine and polycrystalline clinopyroxene containing trace amount of graphite from natural crystals

Fig. 4

Raman spectra of mineral powders and samples that were sintered at 1300 °C for a olivine and 1180 °C for b clinopyroxene. (i) Mineral powders. (ii) Sintered from powders milled with water. (iii) Sintered from powders milled with ethanol. Graphite peaks were not found in sintered samples where the powders were milled using water rather than ethanol

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