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How are igneous rocks that have high levels of quartz classified?
Wiki User
∙ 7y ago
A rock is considered igneous if it formed directly from the cooling of molten rock.
Wiki User
∙ 7y ago
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How can mineral quartz be in an igneous and sedimentary rock?
== == Quartz is actually a silicate mineral that appears in metamorphic, sedimentary, and igneous rocks.
What are rocks that have a glassy texture called?
Obsidian
What is the most common type of rock on earth's surface?
Sedimentary Rocks. 75% of rocks exposed to the surface are sedimentary.
What is the occurrence of quartz?
*volcanic rocks*jewelry*mountains
What are the 3 kinds of rocks?
Sedimentary, Igneous and Metamorphic.
Is amethyst igneous metamorphic or sedimentary?
Amethyst is actually a variety of quartz, and as a mineral, is not classified as igneous, metamorphic, or sedimentary as are rocks.
Is milky quartz a igneous metamorphic or igneous rock?
milky quartz is either metamorphic or igneous
What are Quartz topaz and talc?
igneous rocks
How are igneous rocks classified acording to their..?
Igneous rocks are classified by either being intrusive or extrusive, then mafic or felsic then they are classified by either fine grain or course grained textures.
Igneous rocks that result when lava solidifies are classified as what?
Extrusive igneous rocks.
Igneous rocks with large crystals?
quartz
What are some Common rocks and minerals?
rocks: igneous rocks,metamorphic rocks,sedimentary rocks ect.................
What two rocks are found in the outer core?
igneous quartz
How are rocks physically classified?
they are classified into 3 major kinds of rocksthey are the ;IGNEOUS ROCKS,SEDIMENTARY ROCKS,AND METAMORPHIC ROCKS
what are igneous rock classified based upon?
Igneous rocks can be classified by their method of formation and by their mineralogy.
What rocks are classified as?
Mantle rock is classified as ultramafic igneous rock.
What are the six minerals that make up igneous rocks?
Olivine, Pyroxene, Amphibole, Biotite, Muscovite, Potassium Feldspar, Quartz, Plagioclase are the minerals that make up the Igneous Rocks!:)another one is mica
