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Hajar | all galleries >> Mineral Galleries >> Minerals from the North of England >> Durham Minerals > Alstonite pseudohexagonal bipyramids to 5 mm on witherite tabular pseudohexagonal twins with baryte, 7 cm, New Brancepeth
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04-MAY-2014

Alstonite pseudohexagonal bipyramids to 5 mm on witherite tabular pseudohexagonal twins with baryte, 7 cm, New Brancepeth

According to Symes & Young (2008), "A few specimens were collected in 1909 from the barite-witherite vein at New Brancepeth Colliery, near Durham," and presumably this specimen dates from that time.

Sony a99
1/5s f/14.0 at 105.0mm iso400 full exif

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