Eighth supplementary list of British Isles minerals (English)

Abstract

The last three, together with the present English list, represent a set equivalent to one of the earlier lists, the faster pace of new discoveries dictating the division into smaller regional lists. An occurrence qualifies for inclusion in this English list only if it is both the first in the British Isles and from an English locality, although the practice of mentioning, where appropriate, additional finds in whatever region has been continued.To keep the supplementary lists realistically brief, none of them routinely includes corrections of or deletions from Greg and Lettsom's Manual (1858), nor new and perhaps more significant occurrences of species already on record. (A mineral should not normally appear in more than one list.) Nevertheless, the lists are useful in bringing together a great deal of scattered infor-

A Raman spectroscopic study of uranyl minerals from Cornwall, UK

“…Demartin et al 40 41 while Ca(UO 2 ) 3 (PO 4 ) 2 (OH) 2 ·6H 2 O was previously assigned to a sample from Wheal Edward, St. Just. 29 The EDX spectrum of this sample gives a composition of approximately K 0.7 Ca 1.3 (UO 2 ) 3 (PO 4 ) 1.9 , which has a very similar U/P ratio (1.5) to that of the formula given for the published Wheal Edward sample. 29 However, the presence of both potassium and calcium indicates there are similarities to the composition given by Demartin et al 40 Since the proportion of cations is higher than expected, it is possible that some of these originate from the host rock.…”

“…29 The EDX spectrum of this sample gives a composition of approximately K 0.7 Ca 1.3 (UO 2 ) 3 (PO 4 ) 1.9 , which has a very similar U/P ratio (1.5) to that of the formula given for the published Wheal Edward sample. 29 However, the presence of both potassium and calcium indicates there are similarities to the composition given by Demartin et al 40 Since the proportion of cations is higher than expected, it is possible that some of these originate from the host rock. The strongest band in the Raman spectrum of phosphuranylite (Figure 3) is the uranyl symmetric stretching mode, seen at 801 cm −1 .…”

“…This is illustrated in section 4.3, where the spectrum of kasolite from 0-4000 cm −1 is shown for all three excitation wavelengths. The EDX spectra collected typically agree with the original assignments; [15][16][17]29 the EDX results are given in the supporting information : Table SI 14 gives the average atomic percentages across a number of spectra for each mineral and Table SI 15 presents the theoretical compositions and compares them to the EDX estimates.…”

Compreignacite: a second occurrence, from St. Just, Cornwall

“…Species recorded from Wheal Edward include torbemite, uraninite, autunite (Collins, 1871), metazeunerite (Wolloxal, 1988) and possibly phosphuranylite and sal6eite (Ryback and Tandy, 1992). Minerals attributed to 'zippeite' have also been recorded at Wheal Owles (Collins, 1871), but such records should be regarded as nonspecific, merely implying minerals of zippeite-like appearance.…”

Mineral phases and element composition of the copper hyperaccumulator lichen Lecanora polytropa

“…In England it is restricted to the Coniston copper mines in the English Lake District, where it occurs on malachite, azurite and with smaller amounts of chrysocolla, covelline and bornite cementing fractured quartz (Stanley, 1979;. The lichen is the only known British record of moolooite in which it occurs as vivid blue crystalline inclusions (<0.5 mm) (Young, 1987;Ryback and Tandy, 1992). Moolooite has been characterized in two other lichen species, Acarospora rugulosa and Lecidea lactea from mining areas in Sweden and Norway (Purvis, 1984;Chisholm et al, 1987).…”