Analisis Pola Struktur Kalsium Karbonat (CaCO3) Pada Cangkang Kerang Darah (Anadara granosa) Di Bukit Kerang Kabupaten Aceh Tamiang

Abstract

Characterizationof materialon cockle shell has beenwiped outthe shells hills of the Bendahara district of Aceh Tamiang district, withthe aimof knowingthe basiccontent and diffraction patterns of the cockle shellto plainCaCO3 aragonite. The research method begins with sampling the cockle shell from the Kerang hill. Firstly, preparation cockle shell. Then, characterized by X-Ray Fluorescence (XRF) examiningto work outthe basiccontentwithin thecockle shell, then doing ScanningMicroscopyEnergy Dispersive X-Ray (SEM-EDX), andX-ray diffraction( XRD) testing. The characterizationleads toXRF testing showed that the content of the constituent elements of the CaCO3 compound was dominated by CaO of 98.93% at station I and at station II, CaO was obtainedthe maximum amountas 98.73%. In SEM analysis, the cockle shell have a rod-like morphological structurewithin thesort ofaragonite crystals. The results of EDX at station I, obtained CaO elements is 58.18% and at station II CaO is 36.76%. Theresults ofXRD analysis, the cockle shell have an aragonite phase with an orthorombic crystal structure.the very bestphase that appears at 2? at station I is 26,220, and station II is 26,280.