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

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Authors:Elton, N. J.; Hooper, J. J.; Ryback, G.
Author Affiliations:Primary:
Tregears, Little Treviscoe, Cornwall, United Kingdom
48 St Julitta, Cornwall, United Kingdom
42 Bell Road, Kent, United Kingdom
Volume Title:Mineralogical Magazine
Source:Mineralogical Magazine, 58(2), p.339-341. Publisher: Mineralogical Society, London, United Kingdom. ISSN: 0026-461X
Publication Date:1994
Note:In English. 10 refs.
Summary:Compreignacite was found as a yellow botryoidal mineral on spoil heaps from Wheal Edward inclined shaft, St Just. The crystals are small (<= 1 mm), short prismatic, terminated by a basal pinacoid and often intergrown. SEM shows an almost elliptical profile and basal fracturing. Compreignacite from the adjacent workings at West Wheal Owles is found in intimate association with cuprosklodowskite and uranophane, both of which occur as mats and spherules among and partially covering the compreignacite. [R.A.H.]
Subjects:Crystal chemistry; Mineralization; Oxides; X-ray data; Cornwall England; England; Europe; Great Britain; United Kingdom; Western Europe; Compreignacite; Saint Just Mine; West Wheal Owles Mine
Abstract Numbers:94M/3907
Record ID:1994041534
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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