Related Clues:

• Material in sheets
• Sparkly rock substance
• Flexible mineral
• Muscovite, for example
• Mineral that glistens
• Mineral in sheets
• Easily split mineral
• Layered mineral
• Mineral
• Easily cleaved mineral
• Layered rock
• It's flaky
• Thin-layered mineral
• Sheet rock?
• Aluminum silicate