Igneous Rocks
Igneous Rocks Description : igneous rocks is manufactured lava rocks that is solidify in various shapes and sizes, and is used as a medium for retaining direct heat . igneous rocks are used in natural gas fireplaces or in natural gas or propane burning fire pits . it may be used as the main fuel distributor or as padding or fire glass to go on top . igneous rocks are proven ti increase combustion efficiency and maintain a desirable aesthetic quality . use : Igneous Rocks is known for its ability to withstand high temperatures from direct heat for long period of times. unlike river rocks, which are not porous and very explosive when heated,fire rocks are porous material capable of releasing heat through small holes in their outer layer. moist igneous rocks have been knows to "explode" and throw out pea-sized chunks of rocks as it heats up . the moisture captured in the fire rocks creates air pockets that can easily split the rocks when heated. igneous rocks should be stored