福州砂巖壁畫制作用的泥砂(sha)巖(yan)還(huan)具有(you)(you)類似塑料的塑變性(xing)(xing),更(geng)適(shi)合(he)雕刻和切出10mm厚的薄板,關于砂(sha)巖(yan)輕微的塑變性(xing)(xing),現普遍(bian)認(ren)為是SiO2之間分(fen)子聯結,卻又未(wei)形成結塊的緣故(gu)。砂(sha)巖(yan)的吸(xi)(xi)水率(lv)很大,一些品種(zhong)幾乎(hu)是將水倒上即滲入石材內,砂(sha)巖(yan)因其(qi)內部(bu)構造空隙(xi)率(lv)大的特性(xing)(xing),都有(you)(you)吸(xi)(xi)聲(sheng)、吸(xi)(xi)潮、防火、亞光(guang)的特性(xing)(xing),這種(zhong)特性(xing)(xing)的品種(zhong)裝飾到具有(you)(you)吸(xi)(xi)聲(sheng)要(yao)求(qiu)的影劇院(yuan)、體(ti)育(yu)館、飯店等公共場(chang)所效果十(shi)分(fen)理想,甚至可(ke)省去(qu)吸(xi)(xi)聲(sheng)板和拉毛墻(qiang)。