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Goethite Gemstone: Properties, Meanings, Value & More
针铁矿宝石:属性、含义、价值等
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goethite gemstoneGoethite is an iron mineral related to hematite that’s often found inside other gemstones. Is goethite rare or common? Goethite is an abundant mineral and the most common iron oxide mineral. It’s also the most common part of iron rust.

What does goethite look like? The crystals can be brown, yellow, or red, though most colors have a brown undertone if they’re not completely brown. You’ll usually see paler tones in smaller crystals and darker tones in larger crystals. 

Want to know more? This guide will fill you in on everything you need to know about goethite gemstones, prices, healing properties, and more!

goethite gemstone

What Is A Goethite Crystal?

Goethite is a semi-precious gemstone often found grown into other gems, usually as an inclusion. One common example is goethite in amethyst, producing purple crystals with yellow, orange, or brown portions. These amethyst goethite stones may be called cacoxenite amethyst, but the inclusions aren’t cacoxenite (an iron phosphate mineral). 

Some alternate names for goethite include:

  • Götheite / Göthite

  • Allcharite

  • Brown Iron Ore / Brauneisenerz (German)

  • Conchilites

  • Chileit

  • Fullonite

  • Mesabite

  • Ehrenwerthite

  • Przibramite

  • Yanthosiderite

  • Brown Hematite

  • Brown Ironstone / Braun-Eisenstein (German)

Despite the last few names listed above, goethite is not the same as ironstone or hematite. That said, many of goethite’s uses are similar to the industrial uses of hematite — namely, being used as sources of iron and ingredients in pigments. 

Astrologically, goethite is a lucky zodiac stone for Aries. 

On the scientific side, what is the goethite mineral and how do you identify it?

Goethite Specifications & Characteristics

As an iron oxide hydroxide mineral, goethite’s formula is FeO(OH), sometimes written as α-Fe3+O(OH). Manganese is a common impurity, and the iron in goethite is typically ferric iron (Fe3). 

Goethite is in the diaspore group of metal oxyhydroxides with orthorhombic crystal systems. Other members include diaspore (of course), groutite, tsumgallite, montroseite, and bracewellite.

Some of the most impressive crystal habits of goethite are iridescent stalactites and black clusters of radiating crystals. Other forms include columnar, bladed, and botryoidal (resembling a grape cluster) crystals.

If you’re wondering about magnetism, goethite is magnetic but only weakly.

How do you identify goethite? The most commonly confused mineral is hematite (Fe2O3). Hematite is usually red while goethite is often brown or yellow. Also, hematite is slightly harder, ranking at 5.5-6.5 on the Mohs mineral hardness scale.

If you have a spectrometer, you can check absorption lines for identification. Real goethite will show absorption at 420, 480, 600, and 920nm. Hematite’s absorption lines are at 520, 650, and 880nm.  

Here are the remaining goethite properties:

  • Mohs hardness: 5-5.5

  • Color: Yellow, brown, black, orange, reddish-brown, yellowish-brown, brownish-black, silver

  • Crystal structure: Orthorhombic

  • Luster: Adamantine, silky, metallic, or dull

  • Transparency: Opaque to subtranslucent

  • Refractive index: 2.26 to 2.398

  • Density: 4.27 - 4.29

  • Cleavage: Perfect on [010], imperfect on [100]

  • Fracture: Irregular/uneven or splintery

  • Streak: Brownish-yellow to yellow

  • Birefringence: 0.138

  • Luminescence: None

  • Pleochroism: Present and strong in red/yellow, red/brownish-yellow, and red/orange-yellow

  • Dispersion: Fairly strong

Now, is there more than one type of goethite? Yep!

goethite gemstone rough with calcite

Types of Goethite

There are a few different goethite varieties. Most of them have tricky names, but they’re not complicated to understand. 

  • Ehrenwerthite: Goethite that has partially formed after pyrite, creating a combination of the two

  • Alumogoethite: Goethite containing aluminum

  • Sammetblende or Samtblende: Derived from the German term for “velveit,” a goethite variety made up of tiny needle-like crystal spheres or crusts, giving it a fuzzy carpet look with a velvet-like luster

  • Wood Iron: Goethite with fibrous crystal habit

It’s important to note that “wood iron” is also the name for a fibrous siderite variety.

As you know, you’ll often see goethite inside of other stones like amethyst. Some other gems that contain goethite layers or inclusions include:

In stones like aventurine and sunstone, tiny flakes of goethite (though sometimes hematite or pyrite) are often responsible for the metallic glittering effect called aventurescence. 

Now that you know the mineral side, what is the meaning of goethite? 

iridescent goethite gemstone rough specimen

Goethite Meaning & History

The goethite crystal meaning ties to connection with Mother Earth and the celestial realm. The stone is great for grounding yourself as you explore a higher spiritual connection. 

It extends its connections to the wearer, keeping you securely in reality as you connect to angels or other ethereal beings to gain a greater perspective on the world.

German mineralogist Johann Georg Lenz discovered and named goethite in 1806 after finding the original samples in Herdorf, Germany. He chose the name to honor another Johann, the renowned German scientist and poet Johann Wolfgang von Goethe. 

Goethe was also an author, playwright, politician, and philosopher, on top of serving as Chief Minister of Weimar, Germany. Talk about a jack of all trades!

Goethite’s history extends well beyond 1806, however. Since the Paleolithic era of strictly hunter-gatherer societies (from 2.5 million years ago to 10,000 BC), people have ground goethite to create paint pigment. They still do today! 

In the past, goethite was a popular pigment source for brown or yellow ochre pigments. Archeological evidence revealed goethite within cave paintings in the popular Lascaux cave network of France dating back over 16,000 years!   

Another notable example ties to a king with a legendary golden touch — King Midas. Well, his dad. The tomb of a man believed to be King Gordias, Midas’s father, contained a burial shroud colored by goethite dye. Though it's understandably changed in color over time, the original color likely resembled gold.

In fact, some historians theorize that the entire myth of the “Midas Touch” came from the habit of him and other royalty at the time to wear gold-colored clothes. 

If your life needs a golden touch, you’ll be happy to hear that goethite is a powerful healing crystal! So, what does goethite do spiritually? 

gray goethite healing crystal

Goethite Healing Properties

The color of every gemstone influences its powers as a healing stone. Yellow goethite, like all yellow gemstones, offers greater joy, concentration, and hope. Meanwhile, brown goethite is a chakra stone for the root chakra, joining other brown gems in opening the energy center to bring you grounding and stability.

Next, we’ll look at the physical, emotional, and chakra healing benefits of goethite.

Physical Healing

Crystal healers use goethite to treat problems related to the following:

  • Ears

  • Eyes

  • Digestive system

  • Throat

  • Nose

  • Veins

The crystal is also believed to facilitate a more seamless, speedy recovery after physical trauma or significant wounding.

Emotional Healing

Goethite’s emotional benefits are helpful during many times in life: the start of a new project, a period of grief or loss, and even during a long-term romantic relationship.

This crystal is said to boost creativity and help give you the concentration and confidence to complete any creative endeavor. For those dealing with loss, goethite is a supportive and healing companion. Lastly, if you’re trying to voice your desires or feelings more honestly — whether those feelings are intimacy-based or otherwise.

goethite inclusions in amethyst gemstone faceted

Pictured above: Amethyst with goethite inclusions

Goethite Gemstone Properties

Experts grade goethite and determine its value by looking at its color, cut, clarity, and treatments. 

Color

Besides goethite’s earthy brown, yellow, and reddish hues, it can also show multiple colors! The stone may be color-banded and in some cases, iridescent (especially specimens from Tharsis, Spain). 

Iridescence comes from thin layers of turgite (a mixture of hematite and goethite) on the surface that cause thin-film interference. You’ll often see iridescence on stalactic or botryoidal specimens, which are sometimes sold as “rainbow goethite.” 

Cut

Goethite alone is almost never faceted, though other stones containing it may be faceted (e.g. goethite in amethyst). Typically, goethite is cut into freeform shapes, cabochons, or tumbled stones. Iridescent or color-banded goethites are commonly seen in cabochon jewelry. 

Additionally, raw goethite specimens with interesting features or shapes are often sold uncut as beautiful collector’s pieces. 

Clarity

Goethite is almost always opaque or nearly opaque, so inclusions don’t affect its appearance as much as they would in transparent stones. That said, goethite inclusions in other stones are incredibly versatile. 

For instance, many types of quartz contain goethite inclusions, but the inclusions can show up differently in each stone. Some may be fans, others dendrites, and still others may resemble organ-pipes.

Treatments

Historically, goethite has been heated to become red, then used for creating red pigments. Heat treatments can also make brown goethite yellow. 

Before all the grading happens, how does goethite form? 

goethite gemstone rough with gypsum

Goethite Formation & Sources

Goethite can form in a few different ways. The most common process is when iron-rich minerals undergo weathering, oxidizing to change their ferrous (Fe2+) iron to ferric (Fe3+) iron. This oxidation means goethite is often found at Earth’s surface. 

Other formation processes for goethite include groundwater precipitation or the hydrothermal process (element-rich water settling into crevices and precipitating). Another fascinating but less common formation process is biological, where certain bacteria excrete the mineral. Nature is wild, right?

Back to the oxidation formation, sometimes the initial mineral doesn’t entirely become goethite. In these cases, we have pseudomorphs or combinations of goethite and other minerals. Some common examples are goethite pseudomorphs after pyrite, marcasite, or siderite. 

You can find goethite in many areas, though soils are the most common. Other environments include bogs, swamps, cave floors, creek beds, and the bottom of lakes. 

Geographically, where is goethite found?

Mining Locations

Goethite has been found all over the world. Nigeria is a particularly significant source of gem-quality goethite, while Cuba, England, and the USA are important deposits in general.

Other important goethite sources are:

  • Australia

  • Canada

  • Czechia

  • France

  • Germany

  • USA (Alabama, Colorado, Georgia, Minnesota, Missouri, Tennessee, Virginia)

Though not as abundant, another notable occurrence of goethite is on Mars. Yep, the planet Mars! Not only does this make goethite a space gemstone, it’s also helped scientists learn more about if there was once water on Mars.

goethite gemstone rough specimen

Goethite Price & Value

Most goethite currently available is rough. Cut stones are usually goethite in other gems, with most being amethyst containing goethite. 

Faceted amethyst with goethite gems range from around $4-$20 per carat at wholesale. In cabochon form, these gems fetch about $25 to $75 each. 

Rough goethite specimens vary in price based on their features, size, and rarity. For instance, iridescent goethite specimens are the priciest, ranging from roughly $40 to $350 each. 

Raw amethyst in goethite is significantly more affordable at around $10 each. Other forms of raw goethite go for $10 to $35 at wholesale prices. 

Goethite Care and Maintenance

Lastly, we’ll discuss proper gemstone care for goethite. This mineral has relatively good hardness, but its perfect cleavage means a hard blow from the right angle can leave the stone shattered. For that reason, we recommend goethite jewelry with protective settings

It’s important to keep goethite away from harsh chemicals or acids — that especially goes for hydrochloric acid, which will cause goethite to dissolve.

To clean goethite safely, use a soft toothbrush dipped in a mixture of warm water and mild soap. You may not even need the soap, so you can also try to clean it first with just water and the toothbrush to see if it does the trick. 

Keep goethite away from other gemstones in a cool, dry place. 

goethite inclusions in amethyst rough crystal

Go Go Go with Goethite Gems!

Whether we’re talking about its ties to a legendary king, its presence in cave paintings, or simply its naturally beautiful forms, goethite is a gem worth knowing about. If you’re looking for some motivation, focus, and creativity to keep you going, goethite may just be the perfect stone for you! 

Buy goethite gemstones today!

针铁矿宝石针铁矿是一种与赤铁矿相关的铁矿物,通常存在于其他宝石中。针铁矿是稀有还是常见?针铁矿是一种储量丰富的矿物,也是最常见的氧化铁矿物。它也是铁锈中最常见的部分。

针铁矿长什么样?晶体可以是棕色、黄色或红色,但如果不是完全棕色,大多数颜色都有棕色底色。您通常会在较小的晶体中看到较淡的色调,在较大的晶体中看到较暗的色调。

想知道更多?本指南将为您提供您需要了解的关于针铁矿宝石、价格、治疗特性等的所有信息!

针铁矿宝石

什么是针铁矿晶体?

针铁矿是一种半宝石,通常作为内含物生长在其他宝石中。一个常见的例子是紫水晶中的针铁矿,它会产生带有黄色、橙色或棕色部分的紫色晶体。这些紫水晶针铁矿可能被称为 cacoxenite 紫水晶,但内含物不是 cacoxenite(一种磷酸铁矿物)。

针铁矿的一些替代名称包括:

  • 哥特人 / 哥特人

  • 慈善团体

  • 褐铁矿 / Brauneisenerz(德国)

  • 孔雀石

  • 智利

  • 富龙石

  • 石榴石

  • 埃伦维特

  • 磷锌矿

  • 黄菱铁矿

  • 棕赤铁矿

  • Brown Ironstone / Braun-Eisenstein(德国)

尽管上面列出了最后几个名称,但针铁矿与铁矿石或赤铁矿不同。也就是说,针铁矿的许多用途类似于赤铁矿的工业用途——即用作铁的来源和颜料成分。

在占星学上,针铁矿是白羊座的幸运生肖石

在科学方面,什么是针铁矿矿物以及如何识别它?

针铁矿规格与特性

作为一种氧化铁氢氧化物矿物,针铁矿的分子式为FeO(OH),有时写作α-Fe3+O(OH)。锰是一种常见的杂质,针铁矿中的铁通常是三价铁 (Fe3)。

针铁矿属于具有正交晶系的金属羟基氧化物的水铝石组。其他成员包括水铝石(当然)、灌浆石、tsumgallite、monroseite 和 bracewellite。

针铁矿一些最令人印象深刻的晶体习性是虹彩钟乳石和黑色辐射晶体簇。其他形式包括柱状、刃状和葡萄状(类似于葡萄串)晶体。

如果您想了解磁性,针铁矿具有磁性但很弱。

如何识别针铁矿?最常混淆的矿物是赤铁矿 (Fe2O3)。赤铁矿通常呈红色,而针铁矿通常呈棕色或黄色。此外,赤铁矿稍硬, 莫氏矿物硬度等级为 5.5-6.5。

如果你有光谱仪,你可以检查吸收线以进行识别。真正的针铁矿会在 420、480、600 和 920nm 处表现出吸收。赤铁矿的吸收线位于 520、650 和 880nm。

以下是剩余的针铁矿特性:

  • 莫氏硬度:5-5.5

  • 颜色: 黄色、棕色、黑色、橙色、红棕色、黄棕色、棕黑色、银色

  • 晶体结构: 斜方晶系

  • 光泽:金刚、丝滑、金属或暗淡

  • 透明度: 不透明到亚半透明

  • 折射率:2.26 至 2.398

  • 密度:4.27 - 4.29

  • 乳沟:在 [010] 上完美,在 [100] 上不完美

  • 骨折:不规则/不均匀或碎片状

  • 条痕:棕黄色至黄色

  • 双折射:0.138

  • 发光: 无

  • 多色性:存在并强烈呈现红色/黄色、红色/棕黄色和红色/橙黄色

  • 色散:相当强

现在,是否有不止一种类型的针铁矿?是的!

含方解石的针铁矿宝石原石

针铁矿的种类

有几种不同的针铁矿品种。他们中的大多数都有棘手的名字,但理解起来并不复杂。

  • Ehrenwerthite :在黄铁矿之后部分形成的针铁矿,形成两者的结合

  • Alumogoethite : 含铝的针铁矿

  • Sammetblende 或 Samtblende :源自德语术语“天鹅绒”,一种针铁矿品种,由细小的针状晶体球体或结壳组成,使其具有毛绒地毯的外观和天鹅绒般的光泽

  • 木铁:具有纤维状晶体习性的针铁矿

值得注意的是,“木铁”也是纤维状菱铁矿品种的名称。

如您所知,您经常会在紫水晶等其他宝石中看到针铁矿。其他一些含有针铁矿层或内含物的宝石包括:

在砂金石和日光石等宝石中,微小的针铁矿薄片(尽管有时是赤铁矿或黄铁矿)通常是造成称为砂金现象的金属闪光效果的原因。

既然您了解了矿物方面,那么针铁矿的含义是什么?

虹彩针铁矿宝石原石标本

针铁矿的意义和历史

针铁矿水晶意味着与地球母亲和天界的联系。当您探索更高的精神联系时,这块石头非常适合让自己扎根。

它扩展了与佩戴者的联系,让您在与天使或其他虚无缥缈的存在联系时安全地置身于现实中,以获得更广阔的世界观。

德国矿物学家 Johann Georg Lenz 于 1806 年在德国赫尔多夫找到原始样品后发现并命名为针铁矿。他选择这个名字是为了纪念另一位约翰,著名的德国科学家和诗人约翰·沃尔夫冈·冯·歌德。

歌德除担任德国魏玛首席部长外,还是作家、剧作家、政治家和哲学家。谈论所有行业的杰克!

然而,针铁矿的历史远远超过 1806 年。自从严格的狩猎采集社会的旧石器时代(从 250 万年前到公元前 10,000 年),人们就开始研磨针铁矿来制造油漆颜料。他们今天仍然这样做!

过去,针铁矿是棕色或黄色赭石颜料的流行颜料来源。考古证据显示,法国著名的拉斯科洞穴网络中的洞穴壁画中含有针铁矿,其历史可追溯到 16,000 多年前!

另一个著名的例子与一位具有传奇般的点金术的国王有关——迈达斯国王。好吧,他的父亲。一个人的坟墓被认为是迈达斯的父亲戈迪亚斯国王,里面有一块用针铁矿染料着色的裹尸布。虽然随着时间的推移它的颜色发生了可以理解的变化,但原来的颜色可能类似于金色。

事实上,一些历史学家认为,“点石成金”的整个神话都源于他和当时其他皇室成员穿金色衣服的习惯。

如果您的生活需要点金术,听说针铁矿是一种强大的治疗水晶,您会很高兴!那么,goethite 在精神上做了什么?

灰色针铁矿疗愈水晶

针铁矿的治疗特性

每颗宝石的颜色都会影响其作为治疗石的功效。与所有黄色宝石一样,黄色针铁矿带来更大的欢乐、专注和希望。同时,棕色针铁矿是根脉轮的脉轮石,与其他棕色宝石一起打开能量中心,为您带来稳固和稳定。

接下来,我们将了解针铁矿在身体、情感和脉轮治疗方面的益处。

身体治疗

水晶治疗师使用针铁矿治疗与以下相关的问题:

  • 耳朵

  • 眼睛

  • 消化系统

  • 鼻子

  • 静脉

水晶还被认为有助于在身体创伤或严重受伤后更无缝、更快速地恢复。

情绪疗愈

针铁矿的情感益处在生活中的许多时候都有帮助:新项目的开始、悲伤或失落的时期,甚至是长期的浪漫关系。

据说这种水晶可以激发创造力,帮助您集中精力和自信地完成任何创造性的努力。对于那些处理损失的人来说,针铁矿是一种支持和治愈的伴侣。最后,如果你想更诚实地表达你的愿望或感受——无论这些感受是基于亲密还是其他。

紫水晶宝石刻面中的针铁矿内含物

上图:带有针铁矿内含物的紫水晶

针铁矿宝石属性

专家通过观察其颜色、切工、净度和处理方法对针铁矿进行分级并确定其价值。

颜色

除了针铁矿的土褐色、黄色和微红色调外,它还可以呈现多种颜色!宝石可能带有色带,在某些情况下呈彩虹色(尤其是来自西班牙塔尔西斯的标本)。

虹彩来自表面上的薄层 turgite(赤铁矿和针铁矿的混合物),会导致薄膜干涉。您经常会在星状或葡萄状标本上看到彩虹色,这些标本有时被称为“彩虹针铁矿”。

单独的针铁矿几乎从不刻面,尽管含有它的其他宝石可能有刻面(例如紫水晶中的针铁矿)。通常,针铁矿被切割成自由形状、 凸圆形或滚磨石。彩虹色或色带针铁矿常见于凸圆形珠宝中。

此外,具有有趣特征或形状的原始针铁矿标本通常未经切割作为漂亮的收藏品出售。

明晰

针铁矿几乎总是不透明或几乎不透明,因此内含物不会像透明宝石那样影响其外观。也就是说,其他宝石中的针铁矿内含物用途广泛。

例如,许多类型的石英都含有针铁矿内含物,但内含物在每块石头中的表现可能不同。有些可能是扇子,有些是树突,还有一些可能像风琴管。

疗程

历史上,针铁矿被加热变成红色,然后用于制造红色颜料。热处理也可以使棕色针铁矿变黄。

在所有分级发生之前,针铁矿是如何形成的?

石膏针铁矿原石

针铁矿的形成和来源

针铁矿可以以几种不同的方式形成。最常见的过程是富含铁的矿物经历风化、氧化,将亚铁 (Fe2+) 铁变成三价铁 (Fe3+)。这种氧化意味着针铁矿经常出现在地球表面。

针铁矿的其他形成过程包括地下水沉淀或热液过程(富含元素的水沉入裂缝并沉淀)。另一个引人入胜但不太常见的形成过程是生物形成过程,其中某些细菌会排出矿物质。大自然是狂野的,对吧?

回到氧化形成,有时最初的矿物并没有完全变成针铁矿。在这些情况下,我们有假晶或针铁矿与其他矿物的组合。一些常见的例子是黄铁矿、白铁矿或菱铁矿之后的针铁矿假晶。

您可以在许多地区找到针铁矿,但最常见的是土壤。其他环境包括沼泽、沼泽、洞穴底部、溪床和湖底。

从地理上讲,针铁矿产于何处?

采矿地点

世界各地都发现了针铁矿。尼日利亚是宝石级针铁矿的特别重要产地,而古巴、英国和美国通常是重要的矿床。

其他重要的针铁矿来源是:

  • 澳大利亚

  • 加拿大

  • 捷克语

  • 法国

  • 德国

  • 美国(阿拉巴马州、科罗拉多州、乔治亚州、明尼苏达州、密苏里州、田纳西州、弗吉尼亚州)

虽然没有那么丰富,但另一个值得注意的针铁矿出现在火星上。没错,火星!这不仅使针铁矿成为太空宝石,还帮助科学家更多地了解火星上是否曾经有水。

针铁矿宝石原石标本

针铁矿价格与价值

目前可用的大多数针铁矿都是粗糙的。在其他宝石中,切割宝石通常是针铁矿,其中大多数是含有针铁矿的紫水晶。

带有针铁矿宝石的刻面紫水晶批发价从每克拉 4 到 20 美元左右。这些凸圆形宝石每颗售价约 25 至 75 美元。

针铁矿原石标本的价格根据其特征、尺寸和稀有程度而有所不同。例如,虹彩针铁矿标本是最昂贵的,每件大约 40 美元到 350 美元不等。

针铁矿原料紫水晶的价格要便宜得多,每颗约 10 美元。其他形式的原始针铁矿批发价为 10 到 35 美元。

针铁矿保养和维护

最后,我们将讨论针铁矿的适当宝石护理。这种矿物具有相对较好的硬度,但其完美的解理意味着从正确的角度用力敲击会使石头破碎。因此,我们推荐带有保护镶嵌的针铁矿首饰。

重要的是要让针铁矿远离刺激性化学品或酸——尤其是盐酸,它会导致针铁矿溶解。

要安全地清洁针铁矿,请使用蘸有温水和温和肥皂的混合物的软牙刷。你甚至可能不需要肥皂,所以你也可以先用水和牙刷清洁它,看看它是否有效。

将针铁矿与其他宝石放在阴凉干燥的地方。

紫水晶粗晶中的针铁矿包裹体

Go Go Go 与 Goethite 宝石一起去吧!

无论我们是在谈论它与传奇国王的关系、它在洞穴壁画中的存在,还是仅仅是它自然美丽的形式,针铁矿都是一种值得了解的宝石。如果您正在寻找一些动力、专注力和创造力来让您继续前进,针铁矿可能就是您的完美之选!

立即购买针铁矿宝石!

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