Yellow to greenish to black sand-sized grains of stibiotantalite in a small glass vial with a metal cap. The cap is stamped with Rudolph Flume Berlin. The vial is 20mm long.
1322 Stibiotantalite, Muiâne pegmatite (Muiâne mine; Emdal mines), Muiane-Naipa group, Gilé District, Zambezia Province, Mozambique