Voorbeelden van alkali

• This is corroborated by the rather similar isotopic compositions of the alkali basalts and trachytes.

• Although they had clear morphological characteristics, they consisted of at least three families - acid salts, volatile alkalis, and vinous or inflammable spirits.

• Depleted olivine basalts are associated with radiolarian cherts while most pelagic limestones and cherts are found interbedded with alkali basalts.

• Overlying the alkali basalts are minor tephrite and plagioclase- and kaersutite-phyric phonotephrite lavas.

• Stricture formation is frequent after ingesting caustic chemicals such as strong acids or alkalis.

• In less-deformed portions of larger intrusive bodies, alkali feldspar porphyroclasts are still recognizable.

• These sources work by applying a layer of alkali metal atoms on a low work function substrate, usually tungsten.

• The technique coats a tungsten plug with aluminosilicate doped with an alkali metal, which is then sintered onto the tungsten.