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Spatial Coverage is exactly "Deldardo Creek, CO"
Coarse gabbro, extracted from the southern dike of two east-west dikes N of Deldardo Creek.
Evenly distributed dark, light, and white colored coarse-grained (1 mm) crystals. Obvious traces of oxidation from some metallic mineral…
Rock is comprised predominately of a dark fine grained matrix. Some specimens have minor amounts of pink K-feldspar. Clusters of biotite (~1 cm in diameter) appear on one face of the rock.