Chabazite-Na and an apatite needle in a vugh in andesite. An opalescent effect is produced by the larger crystal lying flat in the vugh with only one face exposed. The surface has a slightly matt... June 29, 2024 Australasia New Zealand ncat JR3 Siderite, Orthoclase, Bickers Quarry (...
Galena weathers readily to the sulfate (anglesite) and carbonate (cerussite) ; consequently it is usually not normally found in the upper portions of veins that are exposed to the action of the air. Veins of galena containing silver (silver-lead) are probably produced by ascending hot water so...
In recent years, Graham Park has been prolific in his writing for Dunedin Academic Press. In this new tome, he has produced what I suspect is a really great introduction to a range of key concepts and geological processes for both undergraduates and the interested, moderately well-informed amat...
In recent years, Graham Park has been prolific in his writing for Dunedin Academic Press. In this new tome, he has produced what I suspect is a really great introduction to a range of key concepts and geological processes for both undergraduates and the interested, moderately well-informed amat...
This might means that there is a multi-stage process of the chromitite as suggested by some researchers (Gervilla et al., 2012, Derbyshire et al., 2013, Zhou et al., 2014). We also note that those who reported ultrahigh-pressure minerals in chromitite do not mention any sulfides and ...
This is the first described case of kaolinite produced through mineral bioatmospherogenesis. The bacterial growth in atmospheric dust was illustrated in SEM images, constituting a novel finding. Twenty-three culturable microorganisms were isolated and identified by 16S rRNA sequencing. Members of the ...