| 21. | The pyroxenes have a variable composition lying between enstatite, ferrosilite and wollastonite.
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| 22. | Common mineral associates in igneous rocks include olivine, pyroxenes, amphiboles and magnetite.
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| 23. | The Lobster Creek Volcanics is actually an intrusion of plagioclase pyroxene hornblende porphyry from.
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| 24. | The mantle is made from glass, that partially devitrified into pyroxene and plagioclase.
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| 25. | Pyroxene andesites are found up to of altitude.
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| 26. | Minerals that often display parting include the pyroxenes, hematite, magnetite, and corundum.
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| 27. | Minerals of this type include olivine and pyroxene, which are found in CM chondrules.
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| 28. | In these, grains of olivine and / or pyroxene are equidimensional and sometimes euhedral.
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| 29. | Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present.
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| 30. | It has two distinct prismatic cleavages at 87 and 93?typical of the pyroxene series.
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