4 lumps of mineral rock(?) or gum(?), no provenance or date details 4 lumps of mineral rock(?) or gum(?), no provenanc
Pieces of mineral in envelope, presented by Field Museum of Chicago, probably from Afghanistan, 1900-1930 Pieces of mineral in envelope 1900-1930
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
Unworked mass of silicon carbide (carborundum) crystals Unworked mass of silicon carbide (carborundum) crystals.
Specimen of sandrose mineral, possibly siderite, translucent brown, from Sahara region, North Africa, indefinite time span Specimen of sandrose mineral