Lyijyhohde
Lyijyhohde, also known by its mineralogical name galena, is a sulfide mineral composed of lead and sulfur, with the chemical formula PbS. It is the primary ore of lead, meaning it is the most important source from which lead is extracted. Lyijyhohde is a soft, heavy mineral with a metallic luster and a gray streak. Its cubic crystal structure often results in well-formed cubic or octahedral crystals. It is found in hydrothermal veins and in sedimentary rocks, often associated with other minerals like sphalerite, calcite, and quartz. Historically, lyijyhohde has been mined for millennia, not only for lead but also for silver, as it often contains trace amounts of this precious metal. The lead extracted from lyijyhohde has a wide range of applications, including in batteries, ammunition, and as a protective shield against radiation. Due to its toxicity, the use of lead has been restricted in many applications, but it remains a vital material in certain industrial processes.