Brammallite (original) (raw)
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.
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|---|---|
| dbo:abstract | 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. (ca) 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. (en) 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. (it) |
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| dbo:wikiPageLength | 2627 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1071633091 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Carmarthenshire dbr:Potassium dbr:Muscovite dbr:United_Kingdom dbr:Geologist dbr:Clay dbr:Phyllosilicate dbr:Magnesium dbr:Silicate_minerals dbc:Magnesium_minerals dbr:Wales dbr:Llandybie dbr:Sericite dbr:Aluminium dbc:Phyllosilicates dbr:Paragonite dbr:Iron dbc:Potassium_minerals dbc:Aluminium_minerals dbc:Monoclinic_minerals dbr:X-ray_diffraction dbr:Monoclinic dbr:Illite dbr:Silicon dbr:H-M_symbol dbr:Mineralogist dbr:Alfred_Brammall |
| dbp:birefringence | δ = 0.030 - 0.035 (en) |
| dbp:category | dbr:Phyllosilicate |
| dbp:class | Prismatic (en) |
| dbp:cleavage | Perfect on {001} (en) |
| dbp:color | White (en) |
| dbp:diaphaneity | Translucent (en) |
| dbp:formula | 24 (xsd:integer) |
| dbp:gravity | 2.830000 (xsd:double) |
| dbp:habit | Earthy clay like (en) |
| dbp:imasymbol | Bmr (en) |
| dbp:luster | Dull, earthy (en) |
| dbp:mohs | -3 (xsd:integer) |
| dbp:name | Brammallite (en) |
| dbp:opticalprop | Biaxial 2V: Measured: 5° to 25° (en) |
| dbp:refractive | nα = 1.535 - 1.570 nβ = 1.555 - 1.600 nγ = 1.565 - 1.605 (en) |
| dbp:streak | White (en) |
| dbp:system | dbr:Monoclinic |
| dbp:wikiPageUsesTemplate | dbt:Frac dbt:Infobox_mineral dbt:Silicate-mineral-stub |
| dbp:wordnet_type | http://www.w3.org/2006/03/wn/wn20/instances/synset-mineral-noun-1 |
| dcterms:subject | dbc:Magnesium_minerals dbc:Phyllosilicates dbc:Potassium_minerals dbc:Aluminium_minerals dbc:Monoclinic_minerals |
| gold:hypernym | dbr:Analogue |
| rdf:type | owl:Thing dul:ChemicalObject dbo:ChemicalSubstance wikidata:Q7946 dbo:Mineral yago:WikicatMagnesiumMinerals yago:WikicatMonoclinicMinerals yago:Abstraction100002137 yago:Material114580897 yago:Matter100020827 yago:Mineral114662574 yago:Part113809207 yago:PhysicalEntity100001930 yago:Relation100031921 dbo:Drug yago:Substance100019613 yago:WikicatAluminiumMinerals yago:WikicatPotassiumMinerals |
| rdfs:comment | 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. (ca) 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. (it) 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. (en) |
| rdfs:label | Brammallite (en) Brammal·lita (ca) Brammallite (it) |
| owl:sameAs | freebase:Brammallite yago-res:Brammallite wikidata:Brammallite dbpedia-ca:Brammallite dbpedia-it:Brammallite https://global.dbpedia.org/id/3NcZt |
| prov:wasDerivedFrom | wikipedia-en:Brammallite?oldid=1071633091&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Brammallite |
| foaf:name | Brammallite (en) |
| is dbo:wikiPageWikiLink of | dbr:List_of_mineral_symbols dbr:List_of_minerals dbr:List_of_minerals_recognized_by_the_International_Mineralogical_Association_(B) dbr:Cefn_Coed_Colliery_Museum dbr:Llandybie dbr:Illite |
| is foaf:primaryTopic of | wikipedia-en:Brammallite |