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Dioritic

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
di·o·rite  (d-rt)
n.
Any of various dark, granite-textured, crystalline rocks rich in plagioclase and having little quartz.

[French, from Greek diorizein, to distinguish : dia-, apart, between; see dia- + horizein, to divide, limit; see horizon.]

dio·ritic (-rtk) adj.


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In many ancient arc systems, uplift and erosion have removed much of the volcanic arc, so that the crystallized products of the magma chambers are exposed as large plutonic bodies, typically of granitic to dioritic composition.
Underlain by a Cretaceous dioritic batholith, the property hosts spectacular intrusive hosted copper-gold mineralization in subhorizontal fractures and veins over an area of at least four square miles.
The primary exploration target within the Orofino Project is bulk tonnage heap leachable gold and silver mineralization within quartz-carbonate veins, shears and structurally controlled breccias hosted in andesitic to dioritic volcanic rocks and associated with dacite dykes and sills.
 
 
 
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