| In geology, the term xenolith is almost exclusively used to describe inclusions in igneous rock during magma emplacement and eruption. |
| The new mineral petarasite occurs as irregular grains in a xenolith in the nepheline syenite at Mont St-Hilaire, Quebec. |
| It occurs in a marble xenolith included in a nepheline syenite, associated with pectolite, apophyllite, quartz and minor aegirine. |
| More than 72 minerals have been recorded from the same xenolith. |
| Although the term xenolith is most commonly associated with igneous inclusions, a broad definition could include rock fragments which have become encased in sedimentary rock. |
| Nalipoite was first collected in 1988 from a sodalite syenite xenolith. |
