Blue Lake Crater's major rock composition components are basalt and picrite basalt (picrobasalt). Analysis of components from Blue Lake Crater eruptive deposits for calc-alkaline melt inclusion showed compositional similarities with the Yapoah and Collier cones, indicating that Blue Lake Crater is also made up of basaltic andesite.
Blue Lake Crater's primary rock composition components are basalt and picrobasalt (picrobasalt). Analysis of components from Blue Lake Crater eruptive deposits for calc-alkaline melt inclusion revealed compositional similarities with the Yapoah and Collier cones, suggesting that Blue Lake Crater is also composed of basaltic andesite.