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Question: 1 peridot ite is composed of olivine clinopyroxene orthopyroxene and...

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1. Peridot ite is composed of olivine, clinopyroxene, orthopyroxene, and an Al-phase. Lets sume the Al-phase is plagioctase. Each of these minerakcomponents have solid solutions between two endm state which endmember is typical of mantle-derived peridotites Draw the olivine phase diagram with 96 forsterite on the x-axis (from 0-100% Fo), and temperature on the y-axis (from 1000-2000 degrees C). Draw a square at 90% Fo, 1000 degrees C. is a crystal of 90% Fo a solid, liquid, or gashee? embers. For each mineral, write the endmembers and 2. 3. Draw the trajectory of your90% F crystal as it warms from 1000 degrees C to its 4. At the melting temperature for 90% Fo, what is the composition of the melt that is 5. Draw a square at 10% Fo, 1000 degrees C. Is this crystal a solid, liquid or gas? Draw the melting point. What is the temperature that a 90% Fo crystal melts at? produced, expressed as % Fo? trajectory of the crystal as it warms to its melting point. Is the melting temperature of a 10% Fo crystal higher, lower, or the same as a 90% Fo crystal? which melt has more magnesium in it-the first melt of a 90% Fo crystal, or the first melt of a 0% Fo crystal?
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