Arkose
Type of sandstone containing at least 25% feldspar
Arkose
Arkose () or arkosic sandstone is a detrital sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. Arkosic sand is sand that is similarly rich in feldspar, and thus the potential precursor of arkose.
Read on Wikipedia · Image James St. John, CC BY 2.0
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