feldspar

The results indicate that the jade mainly consists of illite and a small quantity of feldspar, quartz, hematite, siderite and rutile, which is argillaceous sedimentary rock.

结果表明，其矿物成分以伊利石为主，含有少量的长石、石英、赤铁矿、菱铁矿和金红石，为泥质沉积岩。

It's got lower aluminium and more magnesium relative to silicon, so it has a lower abundance of feldspar [minerals], and so it has clearly undergone a unique geological history.

和硅比起来，它的表面含吕较少。 含镁较多。 所以它表面的长石（一种矿物质）含量很少，水星有一个独特的地理历史。

The feldspar found in granite gives the Brandberg Massif areddish appearance during sunset.

在花冈岩中发现的长石使布兰德山在日落时分呈现红色外貌。