The pilot and passenger were departing a remote, frozen lake, in a wheel/ski equipped airplane. During the takeoff run, in a southerly direction, the airplane encountered strong gusty winds from the east. The airplane began to slide sideways to the right and the right main gear separated from the fuselage at the upper gear attach point. The right wing and propeller struck the ice. The closest official weather observation station, 41 miles west of the accident site, was reporting wind from the east at 12 knots with gusts to 24 knots.