endmember

Noun

Meaning

A member at one end of a range or series made up of similar members.

(mineralogy, specifically) A mineral that occurs at one end in a range of solid solutions.

Examples

Dravite Black Dravite on a grey matrix Dravite, also called brown tourmaline, is the sodium magnesium rich tourmaline endmember. Source: Internet

The ideal reactions involve the magnesium endmember components of the olivine (reaction 1) or serpentine (reaction 2), the latter derived from earlier olivine by hydration and silicification (reaction 3). Source: Internet

These high-pressure phases of iron are important as endmember models for the solid parts of planetary cores. Source: Internet

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