簡介:"主要是由鉛和硫所組成,有時也含有微量的銀、銅、鋅等成分。鉛灰的顏色與條痕、完全的立方解理、比重大等為其重要特徵。 方鉛礦乃是相當普遍的一種硫化礦物,產狀相當多,其中以中、低溫熱液作用為主。一般在氧化帶下形成的方鉛礦並不穩定,常會變為鉛礬、白鉛礦等次生礦物。 大自然中含鉛的礦物不少,但是方鉛礦卻是提煉鉛的最重要礦物。礦物硫化物及硫鹽方鉛礦Galena Sulfides and SulfosaltsConsisting of lead and sulfur, Galena may also contain small amounts of silver, copper or zinc. Its distinct features include lead gray color and streak, perfect cubic cleavage and high density.Galena is a relatively common sulfide mineral, found in a variety of occurrences and localities. In particular, it is abundant in the low temperature hydrothermal deposits. Galena that is formed in the oxidation zone of sulfide deposits is less stable and is often altered to secondary minerals, such as Anglesite and white lead.Among many lead-rich minerals on the earth, Galena is the primary ore of lead."