Figure 1
From: Elasticity and Stability of Clathrate Hydrate: Role of Guest Molecule Motions

Gas hydrate (sI) microstructure. (a) Bulk structure of gas hydrate. (b) Large cage (51262) and small cage (512) of CH4 hydrate. (c) Large cage (51262) and small cage (512) of CO2 hydrate. Red, cyan, and white balls represent oxygen, carbon and hydrogen atoms respectively. Green lines represent hydrogen bonds.