Research paused during World War II, and it was not until the 1950s that powder diffraction analysis revealed the Maya blue ...

Those who travel to the Yucatán Peninsula will recognize the beautiful temple complexes and ruined cities of the Ancient Maya. Peaking in the Maya Classic Period of 250-900 CE, this civilization was ...

据了解，盱眙处于大别山末端，盛产凹凸棒粘土。凹凸棒粘土，一般指坡缕石（Palygorskite），是一种少见的非金属矿物。安徽明光和南京汤山、六合竹镇探明的也有，但很多地方已经资源枯竭。国内探明矿藏的有甘肃，国外探明矿藏有美国。盱眙凹凸棒粘土占全国探 ...

School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of ...

Physical Sciences Division, Institute of Advanced Study in Science and Technology (An Autonomous Institute Under DST, Govt. of India), Vigyan Path, Paschim Boragaon, Garchuk, Guwahati, Assam 781035, ...