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I can break like glass (fracture) and it looks like black glass and can be sharp

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What characteristic provides the best evidence that obsidian rock formed in an extructive environment?

The characteristic that provides the best evidence that obsidian rock formed in an extrusive environment is its glassy texture. This texture indicates rapid cooling of molten lava, preventing the formation of large crystals. Additionally, the presence of gas bubbles or vesicles can further suggest that the lava cooled quickly upon exposure to the surface environment.


Which best explains the glassy look of obsidian?

The fact that obsidian IS glass. It is a naturally occurring form of volcanic glass. Different impurities give it different colors, usually black or shades of gray.


What is the characteristics of obsidian?

Obsidian is a type of igneous rock that cools instantly after a volcano explosion. Obsidian forms when lava enters the water directly after the volcano erupts. The water instantly cools the lava leaving the mineral crystals no time grow. obsidian does not have any minerals and is often classed as a mineraliod. Obsidian can be brown, black, or black and white. Obsidian can often be found in the shape of arrow heads because it was used as a primitive arrow. obsidian is still used to make scalpels.


What texture best describes an igneous rock that formed deep underground?

Igneous rocks that form deep underground typically have a coarse-grained texture, known as phaneritic. This texture occurs because the slow cooling of magma allows large crystals to develop, resulting in a rock that is granular and visible to the naked eye. Common examples of such rocks include granite and diorite. In contrast, igneous rocks that cool rapidly on the surface tend to have a fine-grained or glassy texture.


Which Texture best describes an igneous rock that forms deep underground?

An igneous rock that forms deep underground is best described as having a coarse-grained texture, also known as phaneritic texture. This occurs because the slow cooling of magma beneath the Earth's surface allows large crystals to form. Common examples of coarse-grained igneous rocks include granite and diorite.

Related Questions

Which characteristic provides the best evidence that obsidian rock formed in an extrusive environment?

The glassy texture of obsidian is the best evidence that it formed in an extrusive environment. Obsidian is rapidly cooled lava with no time for crystal growth, resulting in a smooth, glass-like texture.


What characteristic provides the best evidence that obsidian rock formed in an extructive environment?

The characteristic that provides the best evidence that obsidian rock formed in an extrusive environment is its glassy texture. This texture indicates rapid cooling of molten lava, preventing the formation of large crystals. Additionally, the presence of gas bubbles or vesicles can further suggest that the lava cooled quickly upon exposure to the surface environment.


Which best explains the glassy look of obsidian?

The fact that obsidian IS glass. It is a naturally occurring form of volcanic glass. Different impurities give it different colors, usually black or shades of gray.


Why is the texture of obsidian is best contain few or no minerals grains?

Obsidian cools so quickly the mineral grains do not have time to form.


How does the texture of gabbro compare to obsidian?

Both are made from volcanic rock. Pumice forms when lava cools very quickly and still has pockets of air trapped inside. This make the rock very lightweight and porous -- it can even float on water! Obsidian also forms when lava is quickly cooled, but it does not have trapped air pockets inside. It looks like glass and is rather brittle, but makes an excellent material for sharp cutting implements.


What is the characteristics of obsidian?

Obsidian is a type of igneous rock that cools instantly after a volcano explosion. Obsidian forms when lava enters the water directly after the volcano erupts. The water instantly cools the lava leaving the mineral crystals no time grow. obsidian does not have any minerals and is often classed as a mineraliod. Obsidian can be brown, black, or black and white. Obsidian can often be found in the shape of arrow heads because it was used as a primitive arrow. obsidian is still used to make scalpels.


Which property best describes a piece of quartz?

It is a hard crystalline compound of silicon and oxygen.


What is Chanson's texture best described as?

Chanson typically has a homophonic texture, with clear melodic lines accompanied by simple chordal accompaniment. The melody is usually sung in a lyrical and expressive style, making it the focal point of the piece.


What texture best describes an igneous rock that formed deep underground?

Igneous rocks that form deep underground typically have a coarse-grained texture, known as phaneritic. This texture occurs because the slow cooling of magma allows large crystals to develop, resulting in a rock that is granular and visible to the naked eye. Common examples of such rocks include granite and diorite. In contrast, igneous rocks that cool rapidly on the surface tend to have a fine-grained or glassy texture.


What is the BEST shield to buy if your defence is lvl 60?

Obsidian shield


Where is the best place to find obsidian chunks on HorseIsle?

Any of the Lava Isles are where you can find obsidian chunks. There is no "best" place. Also, sometimes you can find them in the rock shops if another player has sold them recently.


Organizing is best described as?

Organizing is best described