Easily Identifying Common Igneous Rocks #education #science

This video explains the main identifying factors of common igneous rocks. 0:00 Introduction, 0:10 Large crystals of quarts (white), feldspar (brownish), and hornblende (black), 0:23 Obsidian Very sharp glass, 0:37 Granite Still large, visible crystals, 0:51 Diorite: 'salt and pepper, large crystals, 1:08 Basalt: very small crystals, black colour, hard, 1:23 Peridotite: large crystals, less than 45% silica, 1:21; rhyolite 1:35, and dark green, intrusive gabbro 1:47.
#geology  #minerals #rock #engineering

• #education
• #igneous_rock
• #rock_minerals
• #geology
• #rock_structure
• #rock_texture
• #gabbro
• #granite
• #rhyolite