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Ferroberaunite, Fe.sup.2+./sup.Fe.sub.5./sub..sup.3+./sup.(PO.sub.4./sub.).sub.4./sub.(OH).sub.5./sub.·6H.sub.2./sub.O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, England

Name: Ferroberaunite, Fe.sup.2+./sup.Fe.sub.5./sub..sup.3+./sup.(PO.sub.4./sub.).sub.4./sub.(OH).sub.5./sub.·6H.sub.2./sub.O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, England
Keywords: crystal structure, Raman spectroscopy, new mineral, Cornwall, XPS spectroscopy, ferroberaunite, phosphate

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2022 Czech Republic English

Authors: Tvrdý, J.; Plášil, J. (Jakub); Vrtiška, L.; Sejkora, J.; Škoda, R.; Dolníček, Z.; Petr, M.; +1 Authors

handle: 11104/0333132

Ferroberaunite, Fe.sup.2+./sup.Fe.sub.5./sub..sup.3+./sup.(PO.sub.4./sub.).sub.4./sub.(OH).sub.5./sub.·6H.sub.2./sub.O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, England

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Abstract

The new mineral ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, occurs in cavities of limonite iron ore from the Gravel Hill mine, Perranzabuloe, Cornwall, England, United Kingdom. Its flattened prismatic crystals up to 400 μm long are dark green to olive green, transparent to translucent, with a vitreous lustre, pearly on cleavages. In this work the mineral's structure and its properties were studied and the results are presented.

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Czech Republic

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Czech Academy of Sciences
Czech Republic
Academy of Sciences Library
Czech Republic

Keywords

crystal structure, Raman spectroscopy, new mineral, Cornwall, XPS spectroscopy, ferroberaunite, phosphate

1 Research products, page 1 of 1

Crig-a-mennis: a Bronze Age Barrow at Liskey, Perranzabuloe, Cornwall
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Green

Ferroberaunite, Fe.sup.2+./sup.Fe.sub.5./sub..sup.3+./sup.(PO.sub.4./sub.).sub.4./sub.(OH).sub.5./sub.·6H.sub.2./sub.O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, England

Ferroberaunite, Fe.sup.2+./sup.Fe.sub.5./sub..sup.3+./sup.(PO.sub.4./sub.).sub.4./sub.(OH).sub.5./sub.·6H.sub.2./sub.O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, England

1 Research products, page 1 of 1

Crig-a-mennis: a Bronze Age Barrow at Liskey, Perranzabuloe, Cornwall