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1. | In slowly cooled intrusive igneous rocks, pigeonite is rarely preserved. | |
2. | At lower temperatures, pigeonite is unstable relative to augite plus orthopyroxene. | |
3. | Quartz is absent, as are orthopyroxene and pigeonite. | |
4. | Pigeonite is a mineral in the Clinopyroxene group. | |
5. | Olivine may also be a phenocryst, and when present, may have rims of pigeonite. | |
6. | Pigeonite can be seen in the lower portion of the Mg-Fe-Ca Pyroxene quadralateral. | |
7. | It was discovered in 1982 during the chemical analysis of The North Haig olivine pigeonite achondrite ( ureilite ). | |
8. | Pigeonite crystallizes in the monoclinic system, as does augite, and a miscibility gap exists between the two minerals. | |
9. | Pigeonite is found as phenocrysts in volcanic rocks on Earth and as crystals in meteorites from Mars and the Moon. | |
10. | In tholeiitic basalt, pyroxene ( augite and orthopyroxene or pigeonite ) and calcium-rich plagioclase are common phenocryst minerals. |
Posted on 30 Nov 2024, this text provides information on Words Starting With P in English-Hindi related to English-Hindi. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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