Andy Yahya Al Hakim
.Litium and Rare Earth Metals (LTJ, or REE - RareEarth Elements) is an important metal used in kitasehari modern-day life, such as electronic equipment (laptop, tablet, smart phone) yangdilengkapi with lithium-ion batteries. The research of the Geological Agency (2020) shows the stabilization of the abundance of lithium in the sample of the Lapindo Sidoarjo (Lusi) mud ranges from 99-280 μg / kg (n = 37). Lusi also became one of the targets of some researchers, Balitbang ESDM (Puslitbang Tekmira), Badangeology with the aim of determining the existence of the estimated elements in the past 5 years. Agustawijaya Ethal. (2017) shows that hot mud from Lusi is composed by the Batuserpih Smectitboard from the Lifting Kalibeng Formation. Awaludin (2020) takes a sampling with a regular grid (250 meters), indicating that lithium abundance on Sampelumpur Sidoarjo (Lusi) Lapindo ranges from 99-280 μg G-1 (n = 37), stronsiumberguar between 256-610 μg G-1 . Land elements are rarely analyzed, but some rare earth elements (Suppose DY, ER, EU, HO, LU, TB, TM, YB) are under the detection of analytical equipment so that they are not detected, so that the existence of land rarely needs to be explected by using the analytics method with high sensitivity . PPMI KK Research ESDB 2021 aims to find out the LTJ and Lithium element correlation with other metal elements that might be carried away, and know about the composition of minerals and geochemicals from Lusilapindo. Analysis was carried out with XRD, a reflection and electron optical microscope (SEM-EDS), total organic carbon analysis (TOC) and the abundance of metal elements with MS.
Papers
This research shows the composition of minerals and geochemistry of Lusi Lapindo's sample from the location in the embankment area containing cordial minerals (kaolinit) which can accommodate Ree. The abundance of the Litium element in Lusi Lapindo's sample is higher than abundance in nature, so it can be a concern for further exploration.