THE MINERAL AMBLYGONITE

• Chemistry: (Li, Na)AlPO4(F, OH), Lithium Sodium Aluminum Phosphate Fluoride Hydroxide.
• Class: Phosphates
• Group: Amblygonite
• Uses: As a source of lithium and phosphorus, as gemstones and as mineral specimens.
• Specimens

Amblygonite is a relatively common phosphate mineral. It is found in lithium and phosphate rich pegmatites as a primary mineral. At times it makes up a significant percentage of the rock although this fact may be overlooked. Amblygonite, as it turns out, is easily confused for other host rock members such as quartz and albite. The general appearance of amblygonite does resemble these two minerals especially the albite but it can be differentiated with a flame test for lithium, density and by its unusual cleavage.

Amblygonite’s name comes from the Greek words for “blunt angles” in allusion to its variously angled cleavages. Amblygonite has no less than four different directions of cleavage at different angles from one another and with different qualities of cleavage. This is very different from quartz which has no cleavage and albite which has only two directions of cleavage at nearly 90 degrees.

Amblygonite has a fairly compact structure. This fact gives rise to a somewhat high specific gravity. Of course a specific gravity of around 3.05 is not considered very high in the mineral kingdom. But a look at amblygonite’s formula shows the elements sodium, lithium, aluminum, hydrogen, fluorine, oxygen and phosphorous. None of these elements are heavy and a mineral composed of these elements would be expected to have a specific gravity lower than 3. Both quartz and albite have lower specific gravities than amblygonite.

Since amblygonite has lithium in its formula, it gives a reliable lithium result with a flame test. Powdered amblygonite which is placed in a gas flame will produce a brightly colored red flame. This is evidence for the presence of lithium.

In amblygonite’s chemistry, the lithium and sodium substitute for each other but there is a greater percentage of lithium than sodium. A mineral with the same structure and chemistry as amblygonite but with more sodium than lithium is called natramblygonite. There is also substitution between the hydroxide and fluorine. Amblygonite also forms a solid solution series with the often associated mineral montebrasite and differs from amblygonite by being richer in hydroxide instead of fluorine. The structures of the two minerals are the same and there are no discernible differences in physical properties between the two. In fact many specimens labeled amblygonite are in fact montebrasite.

Gem quality amblygonite is mined in Brazil and the regions formerly known as Burma. These gems are an attractive yellow color and have an index of refraction of 1.61 and 1.64. This is a relatively low index of refraction but is higher than beryl or quartz and on par with topaz and tourmaline.

Amblygonite, montebrasite, natramblygonite, natromontebrasite, and a mineral named tavorite all belong to a group of minerals called the Amblygonite Group. The members of the Amblygonite Group are triclinic and have the general formula of ABPO4(F, OH). The A ion can be lithium and/or sodium and the B ion can be either aluminum or iron. Tavorite’s formula for example is LiFePO4OH.

PHYSICAL CHARACTERISTICS OF AMBLYGONITE:

• Color is generally white or creamy, but can also be colorless or pale yellow, green, blue, beige, gray or pink.
• Luster is vitreous to greasy and pearly on cleavage surfaces.
• Transparency: Specimens are translucent to less commonly transparent.
• Crystal System is triclinic, bar 1.
• Crystal Habits include short prismatic, tabular or equant crystals referred to as lath-shaped, but more commonly found as anhedral masses and compact grains. Twinning forms elongated, flatten crystals.

Lamellar twinning is sometimes seen.

• Cleavage is in four directions all with varying quality with one direction being perfect, two directions being good and one direction being only distinct. All cleavage angles are non-right angles.
• Fracture is uneven to conchoidal.
• Hardness is 5.5 – 6
• Specific Gravity is approximately 2.98 – 3.11 (slightly above average).
• Streak is white.
• Other Characteristics: When powdered and placed in a gas flame, it gives the flame a bright red color and this indicates the presence of lithium. Some specimens are fluorescent orange in long-wave UV light.
• Associated Minerals include lepidolite, quartz, albite, elbaite, topaz, cassiterite, apatite, brazilianite, beryllonite, montebrasite, triphylite, lithiophilite and spodumene
• Notable Occurrences are Minas Gerais, Brazil; Montebras, France; Germany; Varutrask, Sweden; Sakangyi, Burma; Yellowknife, Northwest Territories, Canada. In the United States localities include Pala District of San Diego County, California; Newry, Hebron, Buckfield and Topsham, Maine; Taos County, New Mexico; Yavapai County, Arizona and the Black Hills area of South Dakota.
• Best Field Indicators are density, associations, environment, lithium flame test and especially the numerous cleavage angles.

http://www.perrysearthmagick.com/metaphysical_properties.htm

http://www.associatedcontent.com/article/663917/discovering_the_gemstone_known_as_amblygonite.html

Discovering the Gemstone Known as Amblygonite

Charlotte Kuchinsky, Yahoo! Contributor Network
Mar 26, 2008 “Contribute content like this. Start Here.”

Amblygonite, sometimes referred to as “The Prophet Stone, is a common phosphate gem that includes a number of other material like lithium, aluminum, and fluoride. This mineral is sometimes mistaken for another

 material known as albite because both can be found in granite pegmatite deposits.

Amblygonite is often found in the same mine area as the gemstones apatite, lepidolite, and tourmaline; all of which are lithium related minerals. It is most often found in white and pastel shades of green, lilac, pink, and yellow. However, it also comes totally translucent.

The gem is nothing new. It was discovered in the United Kingdom in the early 1800’s. Its name is Greek for blunt (amblus) and angle (gouia) because of the way that the material grows.

Although originally found only in the U.K., deposits of amblygonite were eventually also found in Australia, Brazil, France, Germany, Norway, Spain, and the United States. In the U.S., it is mined in California, Maine, and the Black Hills of South Dakota.

For the most part, it is the transparent form of amblygonite that is used as a gemstone. Although it can be found in cabochons and beads, it is usually faceted in order to bring out the delicacy of the stone’s color.

Amblygonite is relatively soft, barely weighing in at a five on the Mohs scale of hardness. Unfortunately, that means that the gem is both difficult to work with and subject to easy damage when set within jewelry.

The gem is rarely set into rings or bracelets because such jewelry pieces take a lot of wear and tear. It is much more popular set within pendants, necklaces, earrings, and pins.

Amblygonite is not an expensive stone, so it is rarely set into precious gold. Instead, it is most often set into sterling silver or plated with gold or platinum.

Because the material is soft, cleaning jewelry items with this gem must be approached carefully. It is not recommended that amblygonite be submersed into harsh chemicals or into technology-driven machines like ultra-sonic cleaners. Harsh chemicals can damage the gem while machinery can crack or even break the stone.

http://www.energy-healing-info.com/metaphysical-properties-of-stones.html

Amblygonite:
Keywords: Will, Manifestation
Chakra: Sacral(2nd), Solar(3rd)
Element: Fire
Amblygonite focuses your Will to facilitate manifestation. It energizes the creative energies and inspires confidence in using them in your Soul Journey. Amblygonite can help with procrastination, empowering you to work with your natural creative energies to accomplish goals. An excellent stone for the proverbial “Starving Artist” who’s belief systems are stuck in poverty consciousness.

http://www.thatcrystalsite.com/guide/properties-glossary.php

Amblygonite

Amblygonite is calming and soothing and is excellent for use in grids to keep the space balanced. It releases past traumas bringing the emotional body into balance and clarity to the mind. Amblygonite is considered to be the food of the gods, imparting a sense of divinity and immortality. It is helpful for those in the arts as it brings creativity and ideas, releasing blocks so we can bring our ideas into reality. Amblygonite is a bringer of insight into duality and helping us to resolve any issues we might have. A useful stone for gently releasing emotional hooks from the solar plexus, Amblygonite assists in ending relationships without angry consequences. It can be used to grid areas of discordance or public disorder, bringing peace and tranquillity, especially where young people are involved. In healing, Amblygonite activates the electrical systems of the body and can be taped over the thymus to protect against computer emanations in those who are sensitive.

Chakras: All
Astrological sign: Taurus