4 lumps of mineral rock(?) or gum(?), no provenance or date details 4 lumps of mineral rock(?) or gum(?), no provenanc
Quartz pieces(?) in brown envelope, presented by Field Museum of Chicago, probably from Afghanistan, 1900-1930 Quartz pieces(?) in brown envelope, presented by F 1900-1930
Pieces of mineral in envelope, presented by Field Museum of Chicago, probably from Afghanistan, 1900-1930 Pieces of mineral in envelope 1900-1930
Unworked mass of silicon carbide (carborundum) crystals Unworked mass of silicon carbide (carborundum) crystals.