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What igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
What is a smooth glassy black igneous rock?
The rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed during rapid cooling of lava. It is usually black in color and has a smooth, glassy texture.
What is a glasslike ignous rock often black in color?
Obsidian is a glasslike igneous rock that is often black in color. It forms when lava cools quickly with minimal crystal growth, resulting in a smooth, glassy texture. Obsidian is commonly used in jewelry and decorative objects due to its shiny appearance.
What is a black glass like rock?
A black glass-like rock could be obsidian, which is a natural volcanic glass formed from rapidly cooled lava. Obsidian is usually black in color and has a shiny, glassy appearance due to its lack of crystalline structure. It is commonly used in jewelry and decorative objects.
Smooth glassy rock?
Obsidian: Its texture is glassy. Obsidian is extrusive or volcanic, because the instantaneous cooling that produces such rocks is a surface phenomenon. Obsidian is amorphous, so, unlike true rocks, it is not composed of minerals.
What do an obsidian rock look like?
Obsidian is a beautiful rock. It's description is pretty simple, it is a rock that formed out of cooled lava, and is black in color.
What is the color of a obsidian rock?
Obsidian rock typically appears black, but it can also have a slight sheen and exhibit various colors like brown, green, or red due to impurities or inclusions in the rock.
What igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
How much is the rock obsidian in money?
? Wholesale $.50 A Lb. ? Retail $1.00 - $12.00 a Lb. Obsidian is glass, and the value depends on the color it is and the type it is
What does rock group does obsidian belong to?
Obsidian is in the Igneous rock group.
What is a smooth glassy black igneous rock?
The rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed during rapid cooling of lava. It is usually black in color and has a smooth, glassy texture.
A black rock formed from cooled lava?
Obsidian
Is obsidian extrusive rock?
No. Obsidian is volcanic glass. Glass is amorphous and thus noncrystalline.
What kind of igneous rock is obsidian?
Obsidian is an igneous rock. However it differs from other rocks because it contains no minerals. It consists of natural glass, which is not a mineral because it has no crystal structure.Answers from McDougal Littell, Earth Science book
Teotihuacan is famous for artifacts made from?
Volcanic rock.
Is volcanic rock obsidian?
No. Obsidian is just one of many types of volcanic rock.
