File:Azul Bahia "Granite", sodalite metasyenite, Itabuna Syenite Complex,Bahia.jpg

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Azul Bahia Granite - sodalite metasyenite from the Precambrian of Brazil.

“Azul Bahia Granite” from eastern Brazil has the reputation for being a very expensive decorative stone. It's distinctive in having considerable non-iridescent blue coloration. “Azul Bahia Granite” is a sodalite metasyenite (a.k.a. sodalite foyaite, sodalite foidolite), with the minerals sodalite (= blue) (Na4(Al3Si3)O12Cl), feldspars and feldspathoids (= white), mafic minerals (= black), and epidote (= greenish) (Ca2FeAl2(Si2O7)(SiO4)O(OH)). This material comes from the Itabuna Syenite Complex, a late Neoproterozoic unit (~676 Ma) that has intruded through the São Francisco Craton.

Locality: commercial quarry at Fazenda Hiassu, city of Itaju do Colonia, southeastern Bahia State, eastern Brazil
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Source Azul Bahia Granite (sodalite metasyenite, Itabuna Syenite Complex, Neoproterozoic, ~676 Ma; Fazenda Hiassu, Bahia State, Brazil) 12
Author James St. John
Other versions More photos: [1]

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/33847610902. It was reviewed on 16 April 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

16 April 2017

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current21:07, 16 April 2017Thumbnail for version as of 21:07, 16 April 20175,152 × 4,768 (14.53 MB)Tillman (talk | contribs)Transferred from Flickr via Flickr2Commons

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