character: Rocky the Geologist
topic: Types of Crystal Structures
grade: 9
subject: Geography
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character: Crystal Explorer
topic: Understanding Mineral Structures
grade: 9
subject: Geography
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character: Gina the Gemologist
topic: Classification of Crystals
grade: 9
subject: Geography
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character: Mineral Mike
topic: Properties of Crystal Lattices
grade: 9
subject: Geography
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