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A dull, hard rock with a conchoidal to splintery fracture derived from contact metamorphism of claystone or marly sandstone by basalt. Also used as a synonym of basalt jasper.
Classification of SystilHide
Mineralogy of SystilHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Glass||An amorphous, homogeneous material with a random liquid-like structure generally formed due to rapid cooling.|