Related Clues:
- Magnetite and cassiterite
- Minecart fillers
- Materials for metallurgists
- Some rock bands
- Metals can be extracted from them
- Mineralogists study them
- Galena and sphalerite
- Mining targets
- Valuable extractions
- Metal-laden rocks
- Mining company's finds
- Minecraft blocks
- Lodes' contents
- Many end in '-ite'
- Sources of 1-Down and 84-Down