Inicio > Ciencias de la tierra, geografía, medioambiente, planificación > Ciencias de la tierra/geociencias > Geología y la litosfera > Zmineralizowane lamprofiary (Abu Rusheid - Sikait) w Egipcie
Zmineralizowane lamprofiary (Abu Rusheid - Sikait) w Egipcie

Zmineralizowane lamprofiary (Abu Rusheid - Sikait) w Egipcie

Mohamed Ibrahim

53,85 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Geología y la litosfera
ISBN:
9786207651535
53,85 €
IVA incluido
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Sobre IBD

Dyki lamprofitowe charakteryzują się powszechnymi strukturami skrzynkowymi (pułapki fizyczne) wypełnionymi napływającą mineralizacją, a ich skalenie i miki są stosunkowo zmienione do minerałów ilastych (pułapki chemiczne). Występują trzy etapy: pierwszy (etap wysokiej temperatury), który charakteryzuje się tworzeniem się rodzimego Au i Ag związanego z pierwotnymi minerałami siarczkowymi, takimi jak piryt, galena, kasyteryt, litargit i arsenopiryt. Drugi etap (w niższej temperaturze) charakteryzuje się tworzeniem wtórnych minerałów siarczkowych. Trzeci etap związany jest z wapnieniem powstałym po utlenieniu (zmiana supergeniczna) i charakteryzuje się tworzeniem kalcytu i minerałów uranu.

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