Obsidian Rock | Definition, Properties & Types
5:22
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Obsidian Rock | Definition, Properties & Types
Learn about obsidian rock. Find out how obsidian is formed and what obsidian is made of. Gain an understanding of obsidian properties, types of obsidian, and obsidian uses.
22K viewsApr 14, 2016
Obsidian Formation
Discovering Rainbow Obsidian: The Science Behind Its Beauty
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Replying to @kingKongSchlong today we are talking about obsidian. Obsidian is volcanic glass that cooled quickly at/above the Earth’s surface. Due to its amorphous structure on an atomic level, it appears shiny or glassy and breaks with conchoidal fractures. This specific sample of obsidian is actually super cool because it has porphyritic quartz phenotypes within it! - #obsidian #geology #igmetpet #igneous #volcano #rocks #geologymajor #earth #science #womeninstem #conchoidalfracture @Taylor Sw
0:20
Replying to @kingKongSchlong today we are talking about obsidian. Obsidian is volcanic glass that cooled quickly at/above the Earth’s surface. Due to its amorphous structure on an atomic level, it appears shiny or glassy and breaks with conchoidal fractures. This specific sample of obsidian is actually super cool because it has porphyritic quartz phenotypes within it! - #obsidian #geology #igmetpet #igneous #volcano #rocks #geologymajor #earth #science #womeninstem #conchoidalfracture @Taylor Sw
TikTokultrabasicmetamafic
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GIA (Gemological Institute of America) on Instagram: "Obsidian is a volcanic silica glass that forms when lava cools so fast that crystals don’t have time to grow. There are several beautiful varieties of obsidian, including snowflake obsidian and rainbow obsidian (seen here). Rainbow obsidian is unusual in that it contains layers of inclusions that are oriented parallel to the lava’s original flow structure. When light reflects off these layers, it is broken into spectral hues creating iridesce
0:14
GIA (Gemological Institute of America) on Instagram: "Obsidian is a volcanic silica glass that forms when lava cools so fast that crystals don’t have time to grow. There are several beautiful varieties of obsidian, including snowflake obsidian and rainbow obsidian (seen here). Rainbow obsidian is unusual in that it contains layers of inclusions that are oriented parallel to the lava’s original flow structure. When light reflects off these layers, it is broken into spectral hues creating iridesce
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