show more I was exploring a cave in minecraft (the seed is worstseedever if you want to get stuck in the same cave -.-) and I fell down a mini waterfall trying to get some diamonds so I can mine obsidian and I got stuck on this obsidian island in the middle of lava...
Texture determines whether an igneous rock is defined as Intrusive (coarsely crystalline) or Extrusive (finely crystalline). Intrusive Igneous Rocks. 1. Fig. 3.2: Intrusive igneous rocks form at some depth within the crust due to slow cooling of magma, resulting in formation of large crystals.Individual crystals can be seen with the naked eye. These rocks are termed texturally as coarsely crystalline or phaneritic.. Fig. 3.2: Intrusive igneous rocks form at some depth within the crust due to slow cooling of magma, resulting in formation of large crystals. Individual crystals can be seen with the naked eye. These rocks are termed texturally as coarsely crystalline or phaneritic.
Igneous rocks-form in two very different environments. All igneous rocks start out as melted rock, (magma) and then crystallize, or freeze. Bowen's Reaction Series is a proposed sequence of mineral crystallization from basaltic magma, based on experimental evidence. Volcanic processes form extrusive igneous rocks.