Related Clues:

• Unrefined rocks
• Objects of extraction
• Hidden treasures of a sort
• Mining discoveries
• Metallurgical specimens
• Smelter inputs
• Underground rock bands?
• Bauxite, haematite etc
• Miners' take
• Assay specimens
• Many "-ite" compounds
• Some deposits
• Bauxite and cinnabar
• "-ite" minerals
• Beryl and bornite