Gas barrier laminate, packaging material, packaging body, and packaged article

A gas barrier laminate, comprising:

• a substrate;
• an inorganic deposition layer containing an inorganic oxide;
• and a coating layer, which are arranged in this order,
• the coating layer containing a carboxy group-containing polymer (a), polyvalent metal-containing particles (b), a surfactant (c), and a silicon-containing compound (d), the silicon-containing compound (d) being at least one selected from a group consisting of a silane coupling agent represented by a general formula (1), a silane coupling agent represented by a general formula (2), hydrolysates thereof, and condensates thereof, a molar ratio (dt)/(at) of a number of moles (dt) of the silicon-containing compound (d) to a number of moles (at) of a carboxy group of the carboxy group-containing polymer (a) being 0.15% or more and 6.10% or less, the coating layer having a film thickness of 230 nm or more and 600 nm or less, where
• (dt) in the molar ratio (dt)/(at) is the number of moles of the silicon-containing compound (d) converted into an equivalent number of moles of the silane coupling agent, and where
• Si
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• OR
• 1
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• 3
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• Z
• 1
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• formula
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• 1
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• Si
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• R
• 2
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• OR
• 3
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• 2
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• Z
• 2
• ,
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• 2
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• in the general formula (1), R1 is an alkyl group having 1 to 6 carbon atoms, which may be the same or different from each other, Z1 is a group having an epoxy group, and in the general formula (2), R2 is a methyl group, R3 is an alkyl group having 1 to 6 carbon atoms, which may be the same or different from each other, and Z2 is a group having an epoxy group, wherein the polyvalent metal-containing particles (b) are dispersed as particles in the coating layer.