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Comments: Small glassy whitish micro crystals of ettringite on a white powdery matrix.
Location: Ettringen, Eifel, Allemagne, Germany.
Scale: 2.5 x 1 x 2 cm.
© John Veevaert
Comments: Doubly-terminated crystals of glassy yellow ettringite on matrix.
Location: N'Chwaning Mine, near Kuruman, South Africa.
Scale: Crystal size 4 cm.
© Rob Lavinsky