Charakterystyka petrograficzna albitofirów, porfirów i diabazów z Mrzygłodu w okolicy Zawiercia

Tadeusz Wieser

Abstract


PETROGRAPHIC CHARACTERISTIC OF ALBITOPHYRES, PORPHYRIES AND DIABASES FROM MRZYGŁÓD NEAR ZAWIERCIE

The paper presented refers to a part of petrographic researches undertaken in order to get acquainted with new occurrences of magnetic rocks in the north-western part of the Lower Silesian Coal Basin.

The magmatics located by borings at Mrzygłód belong to two groups of rocks corresponding petrochemically to basalts and dacites. As a result of subvolcanic conditions of magma solidification and advanced hydrothermal changes, they represent petrographically diabases, dacite porphyries and quartz-albitophyres.


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