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Multicolored Maine Elbaite Crystal

The Mineral elbaite




Elbaite is the most well-known and valuable form of Tourmaline. Most of the multicolored Tourmalines and almost all of the Tourmaline gemstones are of the Elbaite variety. Elbaite is perhaps the most multicolored mineral, coming in virtually every color of the spectrum. Multicolored crystals of Elbaite are well known and unsurpassed in beauty.

Elbaite has many interesting optical properties. Many green and blue specimens are strongly pleochroic. When viewed through their vertical axis, such specimens appear darker in color than when seen through their horizontal axis. Certain Elbaites exhibit a cat's eye effect when polished into cabochons.
Chemical Formula Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
Composition Basic sodium lithium aluminum boro-silicate
Color Elbaite is one of the most varied minerals in terms of color. Colors include green, red, pink and blue. White, colorless, black, brown, yellow, orange, and purple colors are less common. Crystals are frequently multicolored, containing two or more distinct colors. Some specimens are pleochroic.
Streak White
Hardness 7.0 - 7.5
Crystal System Hexagonal
3D Crystal Atlas
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Crystal Forms
and Aggregates
Usually as elongated prismatic crystals that are heavily striated. Also as short, stubby, prismatic crystals. Most Elbaite crystals have a rounded, triangular cross-section. Seldom in tabular crystals. Aggregates include columnar, radiating, botryoidal, in dense groups of tiny, elongated needles, and in compact masses. Crystals may be curved or warped, and in some cases may have their growth interrupted by host rock with the same crystal appearing in two parts of a matrix.
Transparency Transparent to translucent
Specific Gravity 2.9 - 3.0
Luster Vitreous
Cleavage 3,2
Fracture Conchoidal to uneven
Tenacity Brittle
In Group Silicates; Cyclosilicates; Tourmaline Group
Striking Features Color, crystal form, hardness, and deep vertical striations.
Environment Almost exclusively in granite pegmatites.
Rock Type Igneous
Popularity (1-4) 1
Prevalence (1-3) 2
Demand (1-3) 1

Elbaite ON EBAY

VARIETIES
The variety names below that are prefixed with a check are the classic variety names. Modern-day names and trade names are prefixed with an "x".
 -  Colorless variety of Elbaite Tourmaline.
 -  Form of Elbaite Tourmaline with its top portion having a dark blue color, with the rest of the body having a red or pink color. Blue Cap Tourmaline is cherished by collectors.
 -  Elbaite Tourmaline with a deep green color caused by chromium impuritiess.
 -  Form of Elbaite where part of the hydroxyl is replaced with fluorine. Although Fluor-elbaite was known for quote some time, it was only recognized as a distinct mineral species by the IMA in 2011, with the following chemical formula: Na(Li,Al)3Al6(BO3)3Si6O18(OH)3F
 -  Blue variety of Elbaite Tourmaline.
 -  Lightly tinted, transparent Elbaite Tourmaline with a black top that is well known from the island of Elba, Italy.
 -  Elbaite Tourmaline from Burma (Mynamar) with an odd-shaped fan-like protruding botryoidal growth off the top of a crystal that resembles the formation of a mushroom.
 -  Neon blue variety of Elbaite Tourmaline that originated in Paraiba, Brazil. Its interesting color is caused by inclusions of copper.
 -  Pink to red variety of Elbaite Tourmaline.
 -  Purple variety of Elbaite Tourmaline.
 -  Green variety of Elbaite Tourmaline.
 -  Variety of Elbaite Tourmaline that is green on the outside and red on the inside.

USES
Elbaite is form of Tourmaline used as a gemstone. Its popularity has greatly increased since the 1990's, and this has also been reflected in the astronomical prices demanded from the finest Elbaite. Elbaite Tourmaline is cut into all forms and styles for jewelry use. All the colors of Elbaite, especially multicolored gems, are used in jewelry.
See the gemstone section on Tourmaline for more detailed information.

Elbaite form in extremely aesthetic slender crystals that are highly valued by collectors. It is one of the most prized minerals, and fine crystals can be among the most beautiful examples in the mineral kingdom. Instead of being faceted, many Elbaite crystals are preserved for their beauty. Thick, elongated crystals are sometimes sliced into sections and sold as "Tourmaline cross sections".

NOTEWORTHY LOCALITIES
Among the most noteworthy sources of Elbaite is Minas Gerais, Brazil, where outstanding forms and colors of this beautiful Tourmaline are found in numerous pegmatite localities. Specific famed locality names in Minas Gerais include Aracuai, Barra do Salinas, Conselheiro Pena, Governador Valadares, Itambacuri, Ouro Preto, Sao Jose do Safira, Taquaral, and Virgem de Lapa. An immensely popular yet rare neon blue Elbaite, affectionately called Paraiba Tourmaline, came from the Paraiba Mine in Sao José da Batalha, Paraiba, Brazil; and distinctly beautiful raspberry to ruby-red Elbaite var. Rubellite from the Jonas Mine, Itatiaia, Minas Gerais, Brazil.

Afghanistan is also known for its outstanding Elbaite, especially at the mines of Paprok and Mawi in Nuristan, Kunar Province. Excellent Elbaite comes from the mountains of Northern Pakistan at Stak Nala, Skardu, Gilgit District. An odd, radiating botryoidal mushroom-shaped Elbaite ("Mushroom Tourmaline") comes from Mogok, Mynamar (Burma), often in a pink to deep red color. An important Russian locality, which is producing a dark red Elbaite, is the Malkhan Pegmatite, Transbaikalia, in Siberia.

The type locality for Elbaite, where this mineral was first described, is on the on the island of Elba, Italy, in the deposits of San Piero in Campo and nearby Sant'Ilario in Campo. These deposits have produced very old historic Elbaites, especially the classic Moor's Head Tourmalines with black caps.

African localities include the Mt. Ibity area in the Sahatany Pegmatite Field, in Antananarivo Province, Madagascar; Otjua and Usakos, Karibib District, Erongo, Namibia; Alto Ligonha, Zambezia Province, Mozambique; and the Jos Plateu, Nigeria.

In the U.S., Southern California produces some of the most outstanding Elbaites. The most important locality is Pala, San Diego Co., where the specific deposits are the Tourmaline King Mine, the Tourmaline Queen Mine, the Stewart Mine, the Pala Chief Mine, and the Elizabeth R. Mine. The Himalaya Mine, in nearby Mesa Grande, is also a world-famous Elbaite producer. Other important Southern California localities in San Diego Co. include the Little Three Mine, Ramona; and the Cryo-Genie Mine, Warner Springs.

On the East Coast of the U.S., in New England, are some of the classic and famous Tourmaline quarries. Most noteworthy is the state of Maine, which has several important deposits, the most famous being the Dunton Quarry, Newry; and Mt. Mica, Paris, both in Oxford Co.; and Mt. Apatite, in Auburn, Androscoggin Co. In Connecticut, fine green Elbaite once  came from the Gillette Quarry, Haddam, Middlesex Co.

COMMON MINERAL ASSOCIATIONS
Quartz, Microcline, Albite, Lepidolite, Beryl, Spodumene, Biotite, Cookeite, Calcite

DISTINGUISHING SIMILAR MINERALS
Beryl - Striations are much finer and are horizontal, and usually more hexagonal in crystal form.
Apatite - Crystals lack striations , softer (5).
.aspx >Epidote - Softer, different crystal habits.
Schorl - Always opaque.


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