igneous rocks

• Phaneritic Rocks that are classified as intrusive rocks
• Pegmatitic igneous rock whose interlocking crystals grow at least 2.5 cm in size and can be found near masses of large igneous rocks (called batholiths)
• Aphanitic Rocks that are classified as extrusive rocks
• Porphyritic - Rocks with distinct crystals of various sizes
• Vesicular Full of air pockets (called cavities) formed by releasing trapped gas bubbles during solidification
• Felsic Rocks with light coloration as a result of high silica (SiO2) content
• Mafic Rocks with dark coloration as a result of high iron (Fe) and magnesium (Mg) content
• Intermediate - Rocks with varying coloration caused by mixtures of both light and dark materials
• Ultramafic Rocks made of mafic minerals