![]() Whereas the third type of obsidian is Rainbow Obsidian in which an iridescent, rainbow like sheen is cause due to inclusions of magnetite nanoparticle. Also in some obsidian there is a pattern of gas bubbles which produce golden sheen effects making it sheen obsidian. In some of the obsidian there are traces of small, white, radially clustered crystals of cristobalite in the black glass which forms a snowflake like patter and hence the obsidian is termed as snowflake obsidian. With the presence of iron the obsidian may appear black, brown or dark brown in color. ![]() Usually, pure obsidian is dark in color but due to the impurities the color may vary. Around 70 per cent silicon dioxide (SiO2) is present in Obsidian. Well, it can be classified as a mineraloid. Obsidian is a parent material formed from quickly cooled lava and it is not a mineral, but a mineral-like, as it is not crystalline as well as its composition is too variable to be classified as a mineral. Obsidian is commonly found in the places where rhyolitic lava eruptions happen. ![]() When felsic lava is ejected from a volcano and after it cools down quickly with minimal crystal growth then obsidian is produced. Rainbow Obsidian Eye - Color, Facts, Power, Mythology, History And Mythsįormed as an extrusive igneous rock, Obsidian is a naturally occurring volcanic glass. ![]()
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