| http://dbpedia.org/ontology/abstract
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La brammallita o brammal·lita és un mineral de la classe dels silicats, una varietat de paragonita que pertany al grup de les miques. Rep el nom en honor d'Alfred Brammall (1879-1954), geòleg i mineralogista britànic.
, La brammallite è una serie di minerali del gruppo delle miche precedentemente definito come un minerale a sé stante ma i cui estremi non sono ancora stati ben definiti.
, Brammallite is a sodium rich analogue of i … Brammallite is a sodium rich analogue of illite. First described in 1943 for an occurrence in Llandybie, Carmarthenshire, Wales, it was named for British geologist and mineralogist (1879–1954). Believed to be a degradation product of paragonite, like illite it is a non-expanding, clay-sized, micaceous mineral. Brammallite is a phyllosilicate or layered silicate. Structurally, brammallite is quite similar to muscovite or sericite with slightly more silicon, magnesium, iron, and water and slightly less tetrahedral aluminium and interlayer potassium. It occurs as aggregates of small monoclinic white crystals. Due to the small size, positive identification usually requires x-ray diffraction analysis.ually requires x-ray diffraction analysis.
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| http://dbpedia.org/ontology/wikiPageID
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11814039
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2627
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1071633091
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http://dbpedia.org/resource/X-ray_diffraction +
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| http://dbpedia.org/property/birefringence
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δ = 0.030 - 0.035
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| http://dbpedia.org/property/category
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http://dbpedia.org/resource/Phyllosilicate +
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| http://dbpedia.org/property/class
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Prismatic
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| http://dbpedia.org/property/cleavage
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Perfect on {001}
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| http://dbpedia.org/property/color
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White
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| http://dbpedia.org/property/diaphaneity
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Translucent
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| http://dbpedia.org/property/formula
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24
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| http://dbpedia.org/property/gravity
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2.83
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| http://dbpedia.org/property/habit
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Earthy clay like
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| http://dbpedia.org/property/imasymbol
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Bmr
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| http://dbpedia.org/property/luster
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Dull, earthy
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-3
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| http://dbpedia.org/property/name
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Brammallite
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| http://dbpedia.org/property/opticalprop
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Biaxial 2V: Measured: 5° to 25°
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| http://dbpedia.org/property/refractive
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nα = 1.535 - 1.570 nβ = 1.555 - 1.600 nγ = 1.565 - 1.605
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| http://dbpedia.org/property/streak
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White
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| http://dbpedia.org/property/system
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http://dbpedia.org/resource/Monoclinic +
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http://www.w3.org/2006/03/wn/wn20/instances/synset-mineral-noun-1 +
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http://dbpedia.org/resource/Analogue +
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http://en.wikipedia.org/wiki/Brammallite +
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Brammallite
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| rdfs:comment |
La brammallite è una serie di minerali del gruppo delle miche precedentemente definito come un minerale a sé stante ma i cui estremi non sono ancora stati ben definiti.
, La brammallita o brammal·lita és un mineral de la classe dels silicats, una varietat de paragonita que pertany al grup de les miques. Rep el nom en honor d'Alfred Brammall (1879-1954), geòleg i mineralogista britànic.
, Brammallite is a sodium rich analogue of i … Brammallite is a sodium rich analogue of illite. First described in 1943 for an occurrence in Llandybie, Carmarthenshire, Wales, it was named for British geologist and mineralogist (1879–1954). Believed to be a degradation product of paragonite, like illite it is a non-expanding, clay-sized, micaceous mineral. Brammallite is a phyllosilicate or layered silicate. Structurally, brammallite is quite similar to muscovite or sericite with slightly more silicon, magnesium, iron, and water and slightly less tetrahedral aluminium and interlayer potassium.hedral aluminium and interlayer potassium.
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| rdfs:label |
Brammallite
, Brammal·lita
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