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Κρύσταλλοι τεφροΐτη. Ορυχείο N'Chwaning, Kalahari Manganese Field, Northern Cape Province, Νότια Αφρική. Photo: John Veevaert, Trinity Mineral Company. |
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Τεφροΐτης και βιλλεμίτης (άχρωμο). Franklin, Sussex County, New Jersey, Η.Π.Α. Photo: Lou Perloff, Photo Atlas of Minerals. |
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Τεφροΐτης. Franklin, Sussex County, New Jersey, Η.Π.Α. Photo: Lou Perloff, Photo Atlas of Minerals. |
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Τεφροΐτης. Franklin, Sussex County, New Jersey, Η.Π.Α. Photo: Lou Perloff, Photo Atlas of Minerals. |
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Τεφροΐτης. Franklin, Sussex County, New Jersey, Η.Π.Α. Photo: Lou Perloff, Photo Atlas of Minerals. |
