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Lump of cassiterite, no provenance details

Lump of cassiterite

Lump of mineral rock, no provenance details

Lump of mineral rock, no provenance details

3 lumps of mineral rock, no provenance details

3 lumps of mineral rock

4 lumps of mineral rock(?) or gum(?), no provenance or date details

4 lumps of mineral rock(?) or gum(?), no provenanc

Unworked mass of silicon carbide (carborundum) crystals

Unworked mass of silicon carbide (carborundum) crystals.

Specimen of cinnabar, the common ore of mercury, 20th century

Specimen of cinnabar

1900-1970
Specimen of stibnite, the common ore of antimony, 20th century

Specimen of stibnite

1900-1970
Pieces of mineral in envelope, presented by Field Museum of Chicago, probably from Afghanistan, 1900-1930

Pieces of mineral in envelope

1900-1930
Specimen of sandrose mineral, possibly siderite, translucent brown, from Sahara region, North Africa, indefinite time span

Specimen of sandrose mineral

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