ʻO nā momi lana he mau pōpō hakahaka lehu lele e hiki ke lana ma luna o ka ʻili wai. He hina keʻokeʻo lākou, lahilahi a hakahaka, a māmā ke kaumaha. ʻO ka nui o ka nui he 720kg/m3 (kaumaha), 418.8kg/m3 (māmā), a ʻo ka nui o ka ʻāpana ma kahi o 0.1 mm, ua pani ʻia a laumania ka ʻili, ua liʻiliʻi ka conductivity thermal, a ʻo ka refractoriness he ≥1610℃. ʻO ka hoʻohui kemika o nā momi lana he silicon dioxide a me ka alumini oxide. He nui kona mau ʻano e like me nā ʻāpana maikaʻi, hakahaka, māmā, ikaika kiʻekiʻe, kūpaʻa ʻaʻahu, kūpaʻa wela kiʻekiʻe, insulation thermal, insulation a me ka flame retardant. Hoʻohana nui ʻia ia i kekahi o nā mea maka no ka ʻoihana refractory.