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intrusive rock

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intrusive rock

Igneous rock formed from magma forced into older rocks at depths within the Earth's crust, which then slowly solidifies below the Earth's surface, though it may later be exposed by erosion. Igneous intrusions form a variety of rock types. See also extrusive rock.



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The mapping showed areas of intrusive rocks “similar to those found in the California District.
Intrusive rocks of the Coldwell Complex revealed high grade mineral zones of copper, gold, palladium and platinum and other metals.
The Twilight Zone breccia and San Pedro breccia are mineralized zones within and adjacent to granodiorite igneous rocks, thus there is an important relationship between the sedimentary rocks, veins, breccias and intrusive rocks at Vianey Mine.
 
 
 
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