Question
Sample I1 has pink colored minerals present, which are most likely _________.a. quartz b. biotite c. orthoclase d. Ca-rich plagioclase
Step 1
Biotite (b) is a dark mica mineral, usually black or dark brown, so it's not the pink mineral we're looking for. Ca-rich plagioclase (d) is a type of feldspar that ranges from white to gray, so it's also not the pink mineral in question. That leaves us with Show more…
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