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单词 θ6739
释义
the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > spinel group AB2 O4 (39)
spinelle ruby1802

= spinel, n. 1b 2 (cf. 2).

spinelle1804

Mineralogy. = spinel, n. 2.

spinel1807

Mineralogy. The typical species of a group of minerals (the spinel group), which are compounds of sesquioxides with protoxides, and crystallize in…

Subcategories:

— maghemite (2)
— gahnite (4)
— ceylonite (3)
— magnetite (9)
— others (18)
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更新时间:2025/2/3 11:38:32