* Olivine is not a pure mineral: It's a solid solution, meaning it's a mixture of two or more endmember minerals (forsterite and fayalite).
* Composition affects melting point: The ratio of forsterite to fayalite in olivine varies, and this directly affects its melting point. Forsterite (Mg2SiO4) has a higher melting point than fayalite (Fe2SiO4).
* Pressure and other factors: The melting point of olivine is also influenced by pressure, the presence of water, and other factors.
Therefore, the melting point of olivine is a range, not a specific value. Generally, olivine melts at temperatures between 1890 °C (3434 °F) and 1900 °C (3452 °F) under atmospheric pressure.
To get a more precise melting point, you would need to know the specific composition of the olivine sample and the conditions it's being subjected to.
