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      The hypabyssal magmatites resulted by magma penetration into fissure or fracture zones (dikes) or into discontinuities along bedding planes (sills). They are often bound to the plutonite bodies and their surroundings. They sometimes occur in groups, so called dike swarms, which might be as much as several dozens of kilometres long (their composition correponds mostly to basic basaltoids).

pegmatit

No. of sample:	g7430
Rock:	pegmatit, magmatity žilné
Description:	jeden kus
Localization:	Pláně u Otova
Author:	leg.Vejnar, 1965
Comment:	list Horšovský Týn, styk křemenného jádra s písmenkovou žulou

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