Sedimentary rock | |
![]() Arkose with K-feldspar (pinkish-orangish) and quartz (gray) grains | |
Composition | |
---|---|
>25% feldspar |
Arkose (/ˈɑːrkoʊs, -koʊz/) or arkosic sandstone[1] is a detrital sedimentary rock, specifically a type of sandstone containing at least 25% feldspar.[2][3] Arkosic sand is sand that is similarly rich in feldspar, and thus the potential precursor of arkose.
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