![]() It is dominant SiO2, MgO and Fe2O3 is most commont component. Chemical Composition of ObsidianĬhemical composition of it is close to these rock rhyolite and granite. Another common black type is snowflake obsidian, having inclusions of small white crystals. Sheen obsidian has golden effects, while rainbow obsidian possesses characteristic rainbow luster. Volcanic glasses also differ in terms of their structure and texture.Īir bubbles that are imparted in the course of magma flow, are aligned in a regular pattern in some types. Not have their own classification, but they can be characterized using the TASĭiagram in terms of their chemical composition. Volcanic rocks containing more than 80 vol. Reason, the obsidian is sometimes regarded as a mineraloid. Structural ordering similar to crystals only in very short distances. Major minerals: Amorphous volcanic glass that exhibits the The translation into English of Natural History written by Pliny the Elder of Rome shows a few sentences on the subject of a volcanic glass called obsidian (lapis obsidianus), discovered in Ethiopia by Obsidius It is ascribed to Theophrastus who used it for the first time in 320 BC. Name origin: The name obsidian is very old. It is fragile, tough and it disintegrates to very sharp slivers. Diffusion in the very viscous acid and felsic lavas with highly polymerized SiO2 tetrahedrons is slow, thus inhibiting the nucleation of crystals and supporting the origin of the glassy structure. Obsidian most frequently originates by a rapid coooling of a felsic viscous lava. Those are combination of black and brown colours. Hand-specimen rock is common combination of two colours. Colour is controlled factor by trace element content and the character of inclusion. Also It occur red, brown-green, green, yellow and rare transparent colourless. It usually colours dark, black, grey-black to grey. Result of this formed, glass occupies more than 80 % and that have seeming conchoidal fracture and vitreous luster. ![]() It is occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. It is named after the wood of mahogany trees.Obsidian is an extrusive igneous rock. ![]() Mahogany Obsidian is a form of obsidian that is reddish-brown with black spots or stripes. It can help protect you against psychic attack or from taking on the emotional energy of others. Mahogany Obsidian is also a useful grounding stone, and supports the first and second chakras. If you feel you are not expressing your full potential due to past negative experiences in your own life, past lives, your family lineage, or your ancestors, wearing Mahogany Obsidian can help you release these limitations and free up energy to move forward with renewed purpose. Mahogany Obsidian also helps to heal ancestral wounding that can be present from being part of a historically oppressed or traumatized group. These experiences can become stuck in our emotional body and prevent us from using our full power and creativity. It is especially helpful for releasing blocks that are rooted in shame or a feeling of rejection or unworthiness from suffering abuse or humiliation. Mahogany Obsidian is useful for clearing self-imposed blocks that lurk in your subconscious due to past harmful experiences.
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