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6.4 Hornblende-biotite granodiorite. St. Cloud, Minnesota. Pink alkali feldspar is mixed with gray quartz, plagioclase feldspar, black biotite, and hornblende. [Scale is standard GSA scale with cm divisions.]
Image 14 of 156
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![6.4 Hornblende-biotite granodiorite. St. Cloud, Minnesota. Pink alkali feldspar is mixed with gray quartz, plagioclase feldspar, black biotite, and hornblende. [Scale is standard GSA scale with cm divisions.]](../6.4.JPG)