gems-inclusions

Classification of inclusions by time of entrapment, relative to the host crystal

The terms traditionally used for classification of inclusions based on their time of entrapment with regards to the host crystal formation are different for solid and fluid inclusions. In the table below, the classification for both types of inclusions is presented, with links to their detailed descriptions for further information. The schematic figure below is also explained in corresponding sections.

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Time of inclusion formation relative to the host crystal
(click on inclusion types to go to corresponding sections)

	Before	During	After
Solid inclusions	Protogenetic	Syngenetic	Epigenetic
Fluid inclusions	—	Primary and Pseudosecondary	Secondary

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Schematic representation of different tipes of solid and fluid inclusions, classified by their time of entrapment, relative to the host crystal formation.