Fe₃O₄

These samples of magnetite are displayed in the Smithsonian Museum of Natural History. Magnetite is an oxide mineral of iron and has the composition Fe₃O₄. This crystal shows the characteristic geometry. The sample is from Binnatal, Valais, Switzerland. The sample width is about 8 cm with the crystal dimension being about 2 cm.

这些磁铁矿样本陈列在史密森尼自然历史博物馆中。磁铁矿是一种铁的氧化矿物，其化学式为Fe₃O₄。这个晶体显示出典型的几何形状。该样本来自瑞士瓦莱州比纳塔尔。样本宽度约为8厘米，晶体尺寸约为2厘米。

Magnetite and hematite are the two major ores for iron. Magnetite is associated with the term "lodestone", which refers to a variety of magnetite that holds a magnetic field.

磁铁矿和赤铁矿是铁的两种主要矿石。磁铁矿与“磁石”一词相关，指的是具有磁场的磁铁矿种类。

This interesting sample from Stubach Tal, Todtenkopge, Salzburg, Austria shows magnetite with apatite and tremolite. The overall sample size is about 20x25 cm with the magnetite crystals being on the order of a 3-4 centimeters.

来自奥地利萨尔茨堡 Todtenkopf 的 Stubach Tal 样本显示有磁铁矿、磷灰石和 tremolite。整体样本大小约为 20 厘米×25 厘米，磁铁矿晶体大小约为 3-4 厘米。

This large crystal of magnetite measures about 6x7 cm! It comes from Minas Gerais, Brazil, the origin of so many extraordinary large crystals.

这块磁铁矿晶体尺寸约为6x7厘米！它来自巴西的米纳斯吉拉斯州，那里诞生了许多非凡的大晶体。

This sample is from Binnatal, Valais, Switzerland. The sample size is about 15 cm. It shows the geometry of magnetite crystals.

此样本取自瑞士瓦莱州比纳塔尔。样本尺寸约为15厘米。它展示了磁铁矿晶体的几何形态。

This magnetite sample is from Tilly Foster mine, Brewster, New York. It is about 15 cm across.

这块磁铁矿样本来自纽约布雷斯特的蒂利·福斯特矿，直径约为15厘米。

Mindat: 磁铁矿

Magnetite

Fe3O4

Fe₃O₄