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Schorl: NaFe++3Al6(BO3)3Si6O18(OH)4 Albite: NaAlSi3O8
Comments: Several jet-black lustrous crystals of schorl perched on a white albite matrix.
Location: Shengus, Gilgit, Pakistan.
Scale: 4 x 3 x 2 cm.
© Isaias Casanova / IC Minerals
Comments: Parallel grouping of sharp, black schorl crystals showing terminations.
Location: Davib Ost, Erongo Mountains Namibia.
Scale: Crystal size: 1.7 x 1.4 cm.
© Fabre Minerals