primary rocks


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primary rocks

[′prī‚mer·ē ′räks]
(petrology)
Rocks whose constituents are newly formed particles that have never been constituents of previously formed rocks and that are not the products of alteration or replacement, such as limestones formed by precipitation from solution.
References in periodicals archive ?
The primary rocks on the property are of the prospective Balmer Assemblage and exhibit structural and alteration systems typical of the Campbell and Red Lake mine areas.

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