英语

Quiz "Which type of rock am I?"

Which type of rock am I?

a dark volcanic glass formed by very rapid solidification of lava

Which type of rock am I?

a white mineral often tinted by impurities, found in sedimentary rocks and veins. It is used in the manufacture of cement and as a building stone (marble). Composition: calcium magnesium carbonate. Formula: CaMg(CO3)2. Crystal structure: hexagonal (rhombohedral)

Which type of rock am I?

a fine-grained igneous rock consisting of quartz, feldspars, and mica or amphibole. It is the volcanic equivalent of granite

Which type of rock am I?

any extrusive igneous rock formed by the cooling and solidification of molten lava

Which type of rock am I?

a light-coloured fine-grained volcanic rock of rough texture consisting of feldspars with small amounts of pyroxene or amphibole
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