Rutile

金红石

This sample of rutile is on display at the Smithsonian Museum of Natural History. Rutile is titanium dioxide, TiO₂, and it appears as fine red crystals within the larger clear quartz mineral. The size of the sample is about 15-20 cm high.

这种金红石样品陈列在史密森尼自然历史博物馆中。金红石是二氧化钛（TiO₂），它在较大的透明石英矿物中呈现出细小的红色晶体。样品的尺寸大约高15-20厘米。

The inclusion of microscopic needle crystals of rutile in sapphires and sometimes rubies gives to those gems a remarkable six-sided "star" reflection effect. The needle crystals intersect at angles of 60° to provide the star effect which is prominent enough to lead to the description "star sapphire" for some specimens of sapphire.

在 Sapphire 和有时 Rubies 中掺入微小的金红石针状晶体，会使这些宝石呈现出显著的六边形'星'反射效应。这些针状晶体以 60° 的角度相交，产生足够的星效应，以至于某些 Sapphire 会被描述为'星石'。

Rutile is one of the minerals which exhibit significant double refraction.

金红石是表现出显著双折射的矿物之一。

This sample of rutile is from Champion Mine, Mono County, California. It measures about 10x9 cm.

这种金红石样品来自加利福尼亚州莫诺县的冠军矿。其尺寸约为10x9厘米。

This sample of rutile is from Boiling Springs, North Carolina and measures about10x8 cm. It is formed with goethite.

这块钛铁矿样本来自北卡罗来纳州的沸腾泉，尺寸约为10x8厘米，其成因与赤铁矿有关。

This sample of rutile is from Milholland's Mill, Alexander County, North Carolina. It measures about 5x9 cm and is found with muscovite and orthoclase.

这种金红石样本来自北卡罗来纳州亚历山大县的Milholland磨坊。其尺寸约为5x9厘米，与云母和正长石一起发现。

This rutile sample is formed with hematite. It is from Itabiara, Bahia, Brazil and measures about 8x18 cm.

这种金红石样品是用赤铁矿形成的。它来自巴西巴伊亚州的Itabiara，尺寸约为8x18厘米。

The sample of rutile above is from Graves Mountain, Georgia and measures about 10x15 cm.

上述 rutile 样本来自佐治亚州的格雷夫斯山，尺寸约为10x15厘米。

The above left cyclic twinned crystal is from Magnet Cove, Arkansas and above right is from Ouro Preto, Minas Gerais, Brazil. They are about 3x3 cm.

上图左为来自阿肯色州Magnet Cove的环状孪生晶体，右上方为来自巴西米纳斯吉拉斯州Ouro Preto的晶体。它们的尺寸约为3x3厘米。

Above is a twinned crystal of rutile from Pennsylvania. It is about 4x4 cm.

上面是来自宾夕法尼亚州的金红石孪晶。其尺寸约为4x4厘米。

This large sample of quartz with rutile inclusions is about 12x25 cm. It is from Itabiaria, Bahia, Brazil.

这块含有钛铁矿包裹体的石英大样本尺寸约为12厘米×25厘米，来自巴西巴伊亚州的Itabiaria。

These examples of quartz with rutile inclusions are from Minas Gerais, Brazil (left) and Itabiaria, Bahia, Brazil (right). They are both about 10x10 cm.

这些含有钛铁矿包裹体的石英标本来自巴西的米纳斯吉拉斯州（左）和巴伊亚州的伊塔比亚里亚（右）。它们的尺寸大约都是10×10厘米。

Mindat: Rutile（矿物名）