Volcanic rock While still dominated by silicates, more primitive volcanic rocks have mineral assemblages with less silica, such as olivine and the pyroxenes. Bowen's reaction series correctly predicts the order of formation of the most common minerals in volcanic rocks. Occasionally, a magma may pick up crystals that crystallized from another magma; these crystals are called xenocrysts. Diamonds found in kimberlites are rare but well-known xenocrysts; the kimberlites do not create the diamonds, but pick them up and transport them to the surface of the Earth. Volcanic rocks are named according to both their chemical composition and texture. Basalt is a very
Latin Grammy Award for Best Portuguese Language Rock or Alternative Album Latin Grammy Award for Best Portuguese Language Rock or Alternative Album The Latin Grammy Award for Best Portuguese Language Rock or Alternative Album is an honor presented annually at the Latin Grammy Awards, a ceremony that recognizes excellence and creates a wider awareness of cultural diversity and contributions of Latin recording artists in the United States and internationally. According to the category description guide for the 13th Latin Grammy Awards, the award is for vocal or instrumental Portuguese Language Rock albums containing at least 51% playing time of newly recorded material. For Solo artists, duos or groups. From 2000 to