New data on glaucocerinite

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Authors:Raade, G.; Elliott, C. J.; Din, V. K.
Author Affiliations:Primary:
Univ. Oslo, Mineral.-Geol. Mus., Oslo, Norway
Other:
Br. Mus., United Kingdom
Volume Title:Mineralogical Magazine
Source:Mineralogical Magazine, 49 Part 4(353), p.583-590. Publisher: Mineralogical Society, London, United Kingdom. ISSN: 0026-461X
Publication Date:1985
Note:In English. 31 refs.; illus. incl. 4 tables
Summary:The strongest lines in the X-ray powder diffraction pattern of type material of glaucocerinite from Laurion (Greece), indexed on a hexagonal pseudocell, are 10.9 (100) (003), 5.45 (90) (006), 3.63 (80) (009), 2.62 (60) (012), 2.46 (60) (015), 2.231 (50) (018), and 1.981 Å (50) (0.1.11). The pseudocell parameters are a 3.0700(8), c 32.65(1) Å. Chemical analysis of topotype material yields the formula [(Zn,Cu)5Al3(OH)16] [(SO4)1.5·9H2O] based on a pyroaurite-like structure. The pseudocell parameters for this sample are a 3.057(3), c 32.52(5) Å. Optical data are 2Vα ≅ 60°, α 1.540, β 1.554, γ 1.562; D(meas.) = 2.4±0.1 g/cm3, D(calc.) = 2.33 g/cm3. So-called 'woodwardite' from Caernarvonshire, Wales, is identified as the Cuanalogue of glaucocerinite. An '11 Å mineral' occurring together with carrboydite in Western Australia is shown to be the Ni-analogue of glaucocerinite. Alleged cotype glaucocerinite from Laurion is related to woodwardite and has the formula [(Zn,Cu)2Al(OH)6][(SO4)0.5 · 3H2O]. This is a cation-ordered pyroaurite-type structure with hexagonal cell parameters a 5.306(2), c 26.77(2) Å. The strongest X-ray powder lines occur at 8.9 (100) (003), 4.47 (90) (006), 2.55 (60) (113), and 2.28 Å (50) (116). [R.A.H.]
Subjects:Cell dimensions; Chemical composition; Mineral data; Mineralogy; Minerals; Physical properties; Sulfates; X-ray data; Europe; Great Britain; Greece; Laurion Greece; Southern Europe; Sterea Ellas; United Kingdom; Wales; Western Europe; Caernarvon; Glaucocerinite; Woodwardite
Coordinates:N524500 N532000 W0034500 W0044500
Abstract Numbers:85M/4542
Record ID:1986008910
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
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