Il burrone di Vallegrande  [The Vallegrande Ravine]

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Alternate Title:The Vallegrande Ravine
Authors:Marchesini, Marco; Lunaccio, Stefano; Zampa, Anna
Volume Title:Rivista Mineralogica Italiana
Source:Rivista Mineralogica Italiana, 1998(4), p.18-24. Publisher: Rivista Mineralogica Italiana, Milan, Italy. ISSN: 0391-9641
Publication Date:1998
Note:In Italian with English summary. 22 refs.; illus., incl. geol. sketch map
Summary:Minerals of "Burrone di Vallegrande" were already noticed by Issel and Mazzuoli in 1879, when these authors described some nice crystals of datolite. This mineralogical locality was forgotten for about one century until when, the authors discovered again this locality and found some nice crystals of datolite and other minerals, among which beautiful specimens of scolecite. A list of minerals found in this locality includes: Albite, rare small crystals up to 5 mm. Calcite, rhombohedral or prismatic crystals up to 2.5 cm. Chabazite, colourless and translucid crystals up to 3 mm with pseudocubic habit. Chalcopyrite, found only one millimetric bisphenoidal crystal. Datolite, massive or nice crystals up yo 1,5 cm. Epidote, found only in massive form. Pyrite, millimetric, cubic crystals. Scolecite, globular aggregates or acicular crystals up to 2.5 cm. Thomsonite?, this mineral, described in the last century by Pelloux, has not been confirmed by recent analyses carried out by the authors.
Sections:Topographical mineralogy
Subjects:Collecting; Color; Crystal systems; Crystals; Datolite; Datolite group; Framework silicates; Mineral data; Mineral localities; Minerals; Nesosilicates; Orthosilicates; Popular geology; Scolecite; Silicates; Size; Zeolite group; Europe; Italy; Southern Europe; Vallegrande Ravine
Abstract Numbers:99M/3367
Record ID:1999027361
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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