What is the crystal system of dolerite?
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The crystal system of dolerite is generally considered to be the holocrystalline equivalent of basalt, which means that it typically has a fine-grained or microcrystalline texture that does not allow for the identification of crystal faces. Therefore, it does not have a clearly defined crystal system. However, the individual mineral crystals that make up dolerite (such as plagioclase feldspar and pyroxene) have well-defined crystal systems, which are typically triclinic for plagioclase and monoclinic or orthorhombic for pyroxene.