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granodiorite
(redirected from Grandiorite)

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granodiorite

Medium- to coarse-grained rock that is one of the most abundant intrusive rocks. It contains quartz and is distinguished from granite by having more plagioclase feldspar than orthoclase feldspar; its other mineral constituents include hornblende, biotite, and augite. Granodiorite is similar to granite in appearance but darker.


granodiorite [¦gra·nō′dī·ə‚rīt]
(petrology)
A visibly crystalline plutonic rock composed chiefly of sodic plagioclase, alkali feldspar, quartz, and subordinate dark-colored minerals.


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The Leticia project historically produced gold from skarns along the contact of a limestone unit and a grandiorite intrusive.
Agua Verde is a mineralized grandiorite stock with a well developed copper bearing skarn contact with host sedimentary rocks.
Agua Verde is a mineralized grandiorite stock with a well developed copper bearing skarn contact with host sedimentary rocks.
 
 
 
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