File:Boletín de la Sociedad Ibérica de Ciencias Naturales (1921) (20200423278).jpg

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Title: Boletín de la Sociedad Ibérica de Ciencias Naturales
Identifier: boletndel202119211922soci (find matches)
Year: 1919 (1910s)
Authors: Sociedad ibérica de ciencias naturales
Subjects: Natural history; Botany
Publisher: Zaragoza : Librería Editorial de Cecilio Gasca
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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About This Book: Catalog Entry
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Text Appearing Before Image:
(7) DE CIENCIAS NATURALES 85 Pórfido granítico de Llanás - Camprodón (Gerona) Roca compacta francamente porfídica de color gris con manchas negras y blancas, bastante dura y tenaz. A simple vista se ve constituida por gran número de feno cristales de feldespato blanco mate, de cuarzo incoloro y de biotita que destacan sobre una pasta gris, no muy abun- dante, que no deja distinguir sus elementos constitutivos. Observada en preparación microscópica presenta es- tructura pórfido-holocristalína, con fenocristales de oli- goclasa y ortosa alterados; de cuarzo corroído; de biotita pardo rojiza que pasa a clorita en los bordes; y de clorita esferulítica o laminar con epidota y titanita; arman todos estos elementos en una pasta muy compleja (figs. 2 y 3)
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Fig. 3. Pórfido granítico de Llanás. Luz ordinaria, 30 d. Microfot. M. San Miguel.

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https://www.flickr.com/photos/internetarchivebookimages/20200423278/

Author Internet Archive Book Images
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Volume
InfoField
1921
Flickr tags
InfoField
  • bookid:boletndel202119211922soci
  • bookyear:1919
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Sociedad_ib_rica_de_ciencias_naturales
  • booksubject:Natural_history
  • booksubject:Botany
  • bookpublisher:Zaragoza_Librer_a_Editorial_de_Cecilio_Gasca
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Biodiversity_Heritage_Library
  • bookleafnumber:331
  • bookcollection:biodiversity
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
8 August 2015


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