4 lumps of mineral rock(?) or gum(?), no provenanc
Lump of mineral rock, no provenance details
Lump of cassiterite
Specimen of stibnite
1900-1970
Specimen of cinnabar
1900-1970
Unworked mass of silicon carbide (carborundum) crystals.
Specimen of sandrose mineral
Quartz pieces(?) in brown envelope, presented by F
1900-1930
Pieces of mineral in envelope
1900-1930