Lesson plan
Edingtonite
Edingtonite is a white, gray, brown, colorless, pink or yellow zeolite mineral. Its chemical formula is BaAl 2 Si 3 O 10 ·4H 2 O. It has varieties with tetragonal, orthorhombic or triclinic crystals. The mineral occurs within cavities in nepheline syenites, carbonatites, in hydrothermal veins and various mafic rocks. It occurs associated with thomsonite, analcime, natrolite, harmotome, brewsterite, prehnite and calcite. The mineral was first reported by and named for Scottish mineral collector James Edington (1787–1844). Other sources (including the mineralogist Haidinger) credit Scottish geologist and mineralogist Thomas Edington (1814-1859). However, as the mineral was named in 1825, the former accreditation must be the true one.
Article summary
Edingtonite is a white, gray, brown, colorless, pink or yellow zeolite mineral. Its chemical formula is BaAl 2 Si 3 O 10 ·4H 2 O. It has varieties with tetragonal, orthorhombic or triclinic crystals. The mineral occurs within cavities in nepheline syenites, carbonatites, in hydrothermal veins and various mafic rocks. It occurs associated with thomsonite, analcime, natrolite, harmotome, brewsterite, prehnite and calcite. The mineral was first reported by and named for Scottish mineral collector James Edington (1787–1844). Other sources (including the mineralogist Haidinger) credit Scottish geologist and mineralogist Thomas Edington (1814-1859). However, as the mineral was named in 1825, the former accreditation must be the true one.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.