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Host Rocks?

OSHMUNNIES
in Ecology and the Environment

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This is not great thread material, but I would appreciate any answers you have to offer.....

I'm looking for an accurate definition of the term "host rock." In most instances it is used to refer to a bed, formation, or lithodeme that contains a mineral of particular interest. However, I am told by a colleague that it can also refer to any rock layer that has been intruded by an igneous pluton. Does anyone with a background in GEOLOGY know if this is true?

(I would have posted this in a "Geology" section, but apparently one still does not exist on this site)

HOST ROCK:

 

the body of rock surrounding an ore body.

 

means the geologic medium in which the waste is emplaced, specifically the geologic materials that directly encompass and are in close proximity.

 

Rock which serves as a host for other rocks or for mineral deposits.

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