Sheldrickite does not display any fluorescence. The specimens were collected in 1991 and only 60 mg are known to exist which makes it a very rare mineral. Color is colorless to white. Luster is vitreous to silky. Diaphaneity is opaque.
Fracture is uneven.
3 Streak is white. Associated Minerals include aegirine, arfvedsonite, calcite, fluorite, galena, kogarkoite, leucosphenite, microcline, molybdenite, pectolite, polylithionite, schairerite, sphalerite, thenardite and thermonatrite.