ʻO ke ʻano kemika o nā momi lana he silicon dioxide a me ka alumini oxide. He nui kona mau ʻano e like me nā ʻāpana liʻiliʻi, hakahaka, māmā, ikaika kiʻekiʻe, kūpaʻa i ke kapa, kūpaʻa i ke ana wela kiʻekiʻe, insulation thermal a me ka pale ahi. Hoʻohana nui ʻia ia i kekahi o nā mea maka no ka ʻoihana refractory.