A phalanx is a group of armed soldiers in ancient Greece arranged close together in rows.
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The answer would be "Rhyolite Porphyry"
It is a rock that contains
a) Orthoclase + Orthoclase phenocryst = 35 % + 15 % = 50 % = plagioclase feldspar
b) Quartz = 30%
c) Alkali fled spar = 20%
Kim Kardashian is Persian.
Well it can mess around with roads and things and houses and thing can collapse due to the sinkholes