Farbe: weiß
Strichfarbe: weiß
Glanz: Glasglanz, Perlglanz
Opazität: durchscheinend Referenzen: -Grey, I.E., Betterton, J., Kampf, A.R., Price, J.R. and MacRae, C.M. (2015). Penberthycroftite, IMA 2015-025. CNMNC Newsl., No.26, S.943; Min.Mag., 79, 941-47.
-Grey, I. E.1; Betterton, J.; Kampf, A. R.; Macrae, C. M.; Shanks, F. L.; Price, J. R. (2016). Penberthycroftite, ~Al6(AsO4)3(OH)9(H2O)5·8H2O, a second new hydrated aluminium arsenate mineral from the Penberthy Croft mine, St. Hilary, Cornwall. Min. Mag. Vol. 80, S.1149-60.
-Grey, I.A., H.E.A. Brand, J. Betterton (2016): Dehydration phase transitions in new aluminium arsenate minerals from the Penberthy Croft mine, Cornwall, UK. Min.Mag., Vol.80 S.1205-17.
|