| dbo:abstract |
La magadiïta és un mineral de la classe dels silicats. Rep el nom del llac Magadi, a Kenya, la seva localitat tipus. (ca) Magadiita silikato motako minerala da. (eu) Magadiite is a hydrous sodium silicate mineral (NaSi7O13(OH)3·4(H2O)) which precipitates from alkali brines as an evaporite phase. It forms as soft (Mohs hardness of 2) white powdery monoclinic crystal masses. The mineral is unstable and decomposes during diagenesis leaving a distinctive variety of chert (Magadi-type chert). The mineral was first described by Hans P. Eugster in 1967 for an occurrence in Lake Magadi, Kenya, and is also found at Olduvai Gorge, Tanzania. It is also reported from alkalic intrusive syenites as in Mont Saint-Hilaire, Canada. (en) La magadiite è un minerale. (it) |
| dbo:thumbnail |
wiki-commons:Special:FilePath/Magadiite-696064.jpg?width=300 |
| dbo:wikiPageID |
18797238 (xsd:integer) |
| dbo:wikiPageLength |
3547 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID |
1071635153 (xsd:integer) |
| dbo:wikiPageWikiLink |
dbr:Canada dbr:Alkali dbr:Intrusive_rock dbr:Chert dbr:Mont_Saint-Hilaire dbr:Syenite dbr:Phyllosilicate dbc:Minerals_in_space_group_12 dbc:Phyllosilicates dbr:Brine dbr:Diagenesis dbr:Hans_P._Eugster dbr:Tanzania dbc:Sodium_minerals dbc:Monoclinic_minerals dbr:Kenya dbr:Lake_Magadi dbr:Monoclinic dbr:Olduvai_Gorge dbr:Evaporite dbr:Silicate_mineral dbr:Mohs_hardness |
| dbp:caption |
Magadiite. Collected in 1990 from Lake Magadi, Kajiado County, Kenya. (en) |
| dbp:category |
dbr:Phyllosilicate |
| dbp:color |
White (en) |
| dbp:diaphaneity |
Translucent to opaque (en) |
| dbp:fluorescence |
Yellow-white under both long and short wave (en) |
| dbp:formula |
NaSi7O133·4 (en) |
| dbp:gravity |
2.250000 (xsd:double) |
| dbp:habit |
Minute platy crystals; spherulitic aggregates; powdery (en) |
| dbp:imasymbol |
Mgd (en) |
| dbp:luster |
Vitreous - dull (en) |
| dbp:mohs |
2 (xsd:integer) |
| dbp:name |
Magadiite (en) |
| dbp:opticalprop |
Biaxial (en) |
| dbp:refractive |
nα = 1.470 (en) |
| dbp:streak |
White (en) |
| dbp:strunz |
9 (xsd:integer) |
| dbp:symmetry |
C2/m (en) |
| dbp:system |
dbr:Monoclinic Unknown space group (en) |
| dbp:tenacity |
Puttylike (en) |
| dbp:unitCell |
a = 7.22 Å, b = 15.70 Å, (en) c = 6.91 Å; β = 97.27°; Z=1 (en) |
| dbp:wikiPageUsesTemplate |
dbt:Reflist dbt:Infobox_mineral dbt:Silicate-mineral-stub |
| dct:subject |
dbc:Minerals_in_space_group_12 dbc:Phyllosilicates dbc:Sodium_minerals dbc:Monoclinic_minerals |
| gold:hypernym |
dbr:· |
| rdf:type |
owl:Thing dul:ChemicalObject dbo:ChemicalSubstance wikidata:Q7946 dbo:Mineral yago:WikicatSodiumMinerals yago:Abstraction100002137 yago:Material114580897 yago:Matter100020827 yago:Mineral114662574 yago:Part113809207 yago:PhysicalEntity100001930 yago:Relation100031921 yago:Substance100019613 |
| rdfs:comment |
La magadiïta és un mineral de la classe dels silicats. Rep el nom del llac Magadi, a Kenya, la seva localitat tipus. (ca) Magadiita silikato motako minerala da. (eu) Magadiite is a hydrous sodium silicate mineral (NaSi7O13(OH)3·4(H2O)) which precipitates from alkali brines as an evaporite phase. It forms as soft (Mohs hardness of 2) white powdery monoclinic crystal masses. The mineral is unstable and decomposes during diagenesis leaving a distinctive variety of chert (Magadi-type chert). The mineral was first described by Hans P. Eugster in 1967 for an occurrence in Lake Magadi, Kenya, and is also found at Olduvai Gorge, Tanzania. It is also reported from alkalic intrusive syenites as in Mont Saint-Hilaire, Canada. (en) La magadiite è un minerale. (it) |
| rdfs:label |
Magadiïta (ca) Magadiita (eu) Magadiite (it) Magadiite (en) |
| owl:sameAs |
freebase:Magadiite yago-res:Magadiite wikidata:Magadiite dbpedia-ca:Magadiite dbpedia-eu:Magadiite dbpedia-it:Magadiite http://lv.dbpedia.org/resource/Magadijīts https://global.dbpedia.org/id/3Ynrt |
| prov:wasDerivedFrom |
wikipedia-en:Magadiite?oldid=1071635153&ns=0 |
| foaf:depiction |
wiki-commons:Special:FilePath/Magadiite-696064.jpg |
| foaf:isPrimaryTopicOf |
wikipedia-en:Magadiite |
| foaf:name |
Magadiite (en) |
| is dbo:wikiPageWikiLink of |
dbr:List_of_mineral_symbols dbr:List_of_minerals dbr:List_of_minerals_recognized_by_the_International_Mineralogical_Association_(M) dbr:Chert dbr:Kenyaite dbr:Lake_Magadi |
| is foaf:primaryTopic of |
wikipedia-en:Magadiite |
