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SC320 - Dumortierite

Locality: Vaca Morta quarry, Serra da Vereda, Boquira, Bahia, Brazil (MINDAT)
Size: 5.5 x 3 x 2 cm - Small cabinet (5-7 cm)
Weight: 51.5 g
minID: GM6-QE2

Blue dumortierite on quartz. The dumortierite fluoresces a nice blue under shortwave UV light. In the quatz, there is soft, white mineral, fluorescent bright white under longwave UV light, possibly dickite.

Front view. Photo in normal light.
Front view. Fluorescence under shortwave UV light (254nm Hg light).
Side view. Photo in normal light.
Side view. Fluorescence under shortwave UV light (254nm Hg light).
Side view. Fluorescence under longwave UV light (365nm LED).
Last update: 28 December 2020