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新疆榆树沟麻粒岩地体中发育两类尖晶石：一类见于中、基性麻粒岩体中，其化学成分富 Ａｌ 贫 Ｃｒ ，属铝尖晶石，镜下为深绿色，呈半自形至他形粒状，与其它变质矿物共生，表现为麻粒岩相的新生变质矿物；另一类发育在空间上与麻粒岩体紧密相邻的超镁铁质岩体中，为铬尖晶石，镜下为深褐红色，呈不规则粒状分布于橄榄石、斜方辉石和单斜辉石之间，为麻粒岩相变质过程中稳定的残余矿物。后者属于 Ｄｉｃｋ 等人划分的 Ｉ 型尖晶石，它的存在说明超镁铁质岩体为大洋岩石圈地幔的组成部分。这两类尖晶石的特征一方面说明该地体遭受了麻粒岩相的变质作用改造，另一方面也提供了榆树沟麻粒岩相蛇绿岩套属洋盆构造环境的直接矿物学证据。
Two types of spinel are found in the Yushugou granulite body in Xinjiang: one is found in the middle and basic granulite, the chemical composition of which is Al-rich and depleted in Cr, which belongs to the aluminum spinel. The microscope is dark green in half From the shape to the shape of his granular, and other metamorphic minerals symbiotic, showing the granulite facies of the new metamorphic minerals; the other in space closely with the granulite rock in the ultra-mafic rocks, chromium Spinel, microscopically dark brown red, irregularly granular distribution in the olivine, orthopyroxene and clinopyroxene, granulite facies metamorphic process stable residual minerals. The latter belongs to the type I spinel defined by Dick et al. Its presence suggests that the ultramafic mass is part of the oceanic lithospheric mantle. The characteristics of these two types of spinels on the one hand that the body suffered metamorphic granulite facies alteration, on the other hand also provides the Yushugou granulite facies ophiolite set ocean basin tectonic environment direct mineralogy evidence.