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Granite, gabbro, and diorite are a few igneous rocks that forms crystals. Igneous rocks that form visible crystals are intrusive igneous rocks, rocks that form under the earth's surface.
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What igneous rock has crystals that are not visible?
Extrusive igneous rock consists of mineral crystals that are not observable with the naked eye. Obsidian is an extrusive igneous rock (volcanic glass) where there technically are no mineral crystals.
What rock forms when tiny crystals in magma form?
igneous rock
You find an igneous rock with no visible mineral crystals were did this rock most likely form?
in a cave
A foliated metamorphic rock forms when crystals .?
A foliated metamorphic rock forms when crystals combine and form visible bands
A foliated metamorphic rock when crystals?
A foliated metamorphic rock forms when crystals combine and form visible bands
What igneous rock has crystals that are not visible?
Extrusive igneous rock consists of mineral crystals that are not observable with the naked eye. Obsidian is an extrusive igneous rock (volcanic glass) where there technically are no mineral crystals.
What is a black intrusive rock with small crystals?
Intrusive rock normally has visible crystals. Extrusive igneous rock has small crystals. A black extrusive igneous rock with small crystals could be basalt.
Does gabbro have crystals?
Yes. Gabbro is an intrusive igneous rock with visible mineral crystals.
How can you determine if a igneous rock has had an intrusive or extrusive origin?
== Grain size. Most intrusive igneous rocks will have visible crystals. Crystals in most extrusive igneous rocks are not easily visible.
What rock forms when tiny crystals in magma form?
igneous rock
How can you tell that a rock is a igneous rock?
Well The Igneous Rock: When it Forms Underground the Pressure combines with Large crystals :)
What is Granite crystal?
Granite is an igneous rock with visible mineral crystals.
You find an igneous rock with no visible mineral crystals were did this rock most likely form?
in a cave
What is a term that describes an igneous rock texture in which crystals are present but are not visible?
extrusive
A foliated metamorphic rock forms when crystals .?
A foliated metamorphic rock forms when crystals combine and form visible bands
What igneous rock has no visible crystals?
Granite is a coarse grained igneous rock without Pyroxene.
What type rock forms when magma cools and hardens?
Igneous Rock is formed when magma cools and hardens. It depends on whether it cools above ground or under ground for the size of the mineral crystals forming inside it.
