The phrase "a primary constituent of" is correct and usable in written English.
It can be used when discussing the essential components or elements that make up a larger whole, often in scientific or technical contexts.
Example: "Water is a primary constituent of all living organisms, playing a crucial role in biological processes."
Alternatives: "a key component of" or "an essential part of".
Orthoclase is a primary constituent of intrusive felsic igneous rocks such as granite, granodiorite, and syenites.
Sapphire is a primary constituent of many igneous rocks, especially syenites, pegmatites, and various basic (silica-poor) types; it also occurs in schists and metamorphosed carbonate rocks.
This occurs because of the formation of cross-links both within the molecules of collagen, a primary constituent of connective tissue, and between adjacent collagen fibres.
The utilization of lignin which is a primary constituent of biomass still remains the world most difficult problem due to its highly aromatic polymeric structure.
Selz's complex completion resembles the "eduction of correlates" that the British psychologist Charles E. Spearman saw as a primary constituent of intellectual functioning, its complement being "eduction of relations"—that is, recognition of a relation when two elements are presented.
Arsenic is a primary constituent of certain ores and occur as a trace impurity in others (Lorenzen et al. 1995).
They are directed towards a primary constituent community of teachers, administrators, managers and developers of e-learning.
It is clear that the CH peripheral stalk base is unique to the dissociated V1-ATPase and represents a dynamic sub-assembly that may be a primary constituent in the formation of the complete cytoplasmic domain.
Since the adjudication of deportability is certainly the principal ingredient, and an indispensable one, of the ultimate result of the proceedinga final order of deportationit would not be unusual for Congress to include in an overall enactment relating to judicial review of all final orders of deportation a specific provision pertinent to the primary constituent of such an order.
This, in the case of a recombinant event, will determine the primary constituent of the potential sample mix-up as represented by a closely related sequence that is available in the total database.
In addition to their potential for dangerous explosions, leaking gas pipes can be a significant contributor to global warming: Methane, the primary constituent of natural gas, is a greenhouse gas 25 times more potent than carbon dioxide.
