📅 NSB Middle School 2021🎓 MS🔄 Round 9#️⃣ Question 2🌟 BONUS✍️ Short Answer
Identify all of the following three mineral groups that typically exhibit cleavage planes that meet at approximately 120 and 60-degree angles: 1) Pyroxene [pie-ROX-een]; 2) Feldspars; 3) Amphiboles [AM-fih-bowls].
✔️Answer:3
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