Chibaite is a rare silicate mineral. It is a silica clathrate with formula SiO2·n(CH4,C2H6,C3H8,i-C4H10) (n = 3/17 (max)). The mineral is cubic (diploidal class, m3) and the silica hosts or traps various hydrocarbon molecules, such as methane, ethane, propane and isobutane.
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