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Gerstleyite, Probertite
Dimensions:
8.0x 5.3x 2.21.1x 0.7x 0.5
Object number: 2019.3.1869
Descriptionlarge piece: g. in masses of prismatic micro crystals in two clumps and as disseminated grains in matrix, p. in masses of white needles to 2.2 cut long. Small piece nearly complete 9 rose in clay.