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hornblende

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hornblende

Green or black rock-forming mineral, one of the amphiboles. It is a hydrous silicate composed mainly of calcium, iron, magnesium, and aluminium in addition to the silicon and oxygen that are common to all silicates. Hornblende is found in both igneous and metamorphic rocks and can be recognized by its colour and prismatic shape.



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? Mentioned in ? References in periodicals archive
 
Other minerals in the stone are feldspar, quartz and hornblende, which give the stone a light-green tone from different views.
Firm tells the story behind 'Freedom Stone' by Real Estate Weekly
About the same time Brian Mason, then curator of the National Collection of Meteorites, considered re-analysis of hornblende and pyrope from Kakanui, New Zealand.
Smithsonian Microbeam Standards by Jarosewich, Eugene / Journal of Research of the National Institute of Standards and Technology
5) are a grey, medium-to coarse-grained, undeformed hornblende tonalite or quartz diorite.
Geology of the Roman Catholic Basilica of St. John the Baptist, St. ... by Pollock, Jeff / Geoscience Canada
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