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1/19/2021 A Deep Dive Into the Properties of Quartzite-Use Natural Stone <br /> Cross bedding is a good news/bad news Gmsbedding pstternsare ahallmark a(sandstone <br /> situation.The good news is that cross <br /> bedding is an easy giveaway that the <br /> stone is not marble.Yay! But that also <br /> means its a sandstone or a grainy <br /> quartzite and is likely to have higher <br /> porosity compared to a crystalline <br /> quartzite. When a stone undergoes a high <br /> degree of metamorphism, it fully erases z� <br /> cross beds. k"p r.+r+a.4.n.h.er.frv.".r. <br /> Bottom line - if the stone has cross beds, it's important to test the porosity because the <br /> stone was not subjected to a super high degree of metamorphism. <br /> Many forms of cross bedding <br /> Y -- — <br /> White Macaubus Nuage Calacatta Fendi <br /> WR <br /> Infinity White i White Seat." Wild Sea <br /> Image by Karin Kirk for the Natural Stone Institute <br /> 3. Does it absorb water? <br /> The more compressed a stone got during its formation,the lower its porosity will be. An <br /> easy way to check the porosity is to take an unsealed chunk of stone and let one edge of it <br /> sit in water for about 15 minutes. <br /> https://usenaturaistone.org/properties-of-quartzite/ 11/16 <br />