A suite of mafic pyroxenite xenoliths and clinopyroxene megacrysts was brought to the surface by Cenozoic nephelinites of the Jbel Saghro Volcanic Field (Anti-Atlas, Morocco). The large population of samples was subdivided into five groups: (i) clinopyroxenites sensu stricto; (ii) olivine clinopyroxenites; (iii) mica-bearing clinopyroxenites; (iv) kaersutite-bearing clinopyroxenites; (v) clinopyroxene megacrysts. These xenoliths display a cumulate texture (adcumulate, heteradcumulate with poikilitic clinopyroxene including olivine). The clinopyroxenes have the composition of augite and show an appreciable variation of MgO (7.02–14.80 wt.%), TiO₂ (0.58–5.76 wt.%) and Al₂O₃ (2.81–12.38 wt.%) contents in grains. The clinopyroxenes are characterized by convex upward chondrite-normalized REE patterns, they display very similar trace element compositions with low contents of incompatible elements such as Rb (0−0.9 ppm), Ba (0.1–8.3 ppm), Th (0.1−0.3 ppm), U (0.01−0.04 ppm) and Nb (1.3–3.2 ppm). REE contents of the calculated melts in equilibrium with the clinopyroxene megacrysts and clinopyroxene from pyroxenite xenoliths are similar to those of the nephelinites exposed in Jbel Saghro. Crystallization temperatures of pyroxenite xenoliths and clinopyroxene megacrysts range from 950 °C to 1150 °C. Clinopyroxene barometry yielded pressure of crystallization ranging from 0.4 to 0.8 GPa for pyroxenite xenoliths and 0.3 to 0.7 GPa for clinopyroxene megacrysts. This pressure range is in agreement with pyroxenite xenoliths and clinopyroxene megacrysts being crystallized from their parental melts at the lower and upper crust.

Jbel Saghro火山场（Anti-Atlas，摩洛哥）的新生代软云母将一组镁铁质辉绿岩异岩和斜辉石巨晶带到了地表。大量的样本可分为五类：（i）斜辉石。（ii）橄榄石斜辉石；（iii）含云母的斜辉石；（iv）含钾长石的斜辉石；（v）斜柏基巨晶。这些异种石显示出堆积的质地（堆积的，与包括橄榄石在内的多斜长石斜向四边形的杂堆积）。斜茂铁具有辉石的成分，并显示出MgO（7.02–14.80 wt。％），TiO ₂（0.58–5.76 wt。％）和Al ₂ O _{3的明显变化}谷物中的含量为（2.81–12.38 wt。％）。斜辉石的特征是向上凸的球粒晶归一化REE模式，它们显示出非常相似的痕量元素组成，其中不相容元素的含量低，例如Rb（0-0.9 ppm），Ba（0.1-8.3 ppm），Th（0.1-0.3 ppm ），U（0.01-0.04 ppm）和Nb（1.3-3.2 ppm）。计算得出的熔体的REE含量与辉石岩异岩中的斜辉石大晶和斜辉石的平衡与Jbel Saghro中暴露的霞石相似。辉石辉石异岩和斜辉石大晶的结晶温度范围为950°C至1150°C。Clinopyroxene气压计产生的结晶压力，辉石矿异石为0.4至0.8 GPa，Clinopyroxene巨晶为0.3至0.7 GPa。