Where can you find elbaite?
Elbaite forms in igneous and metamorphic rocks and veins in association with lepidolite, microcline, and spodumene in granite pegmatites; with andalusite and biotite in schist; and with molybdenite and cassiterite in massive hydrothermal replacement deposits.
What is the mineral structure of calcite?
Three perfect cleavages give calcite its six-sided polyhedrons with diamond-shaped faces; the angles defining the faces are 78° and 102°. The three important crystal habits (distinctive shapes of the mineral) of calcite are: (1) prismatic (both short and long), (2) rhombohedral, and (3) scalenohedral.
What does elbaite look like?
Although best known in shades of green and red, elbaite can also be blue, purple, yellow, and even colorless. As you see here, the elbaite transitions from colorless to green as the solution changed as the crystals formed.
How do you identify the mineral calcite?
By double refraction when light passes through calcite, it is split into two rays and is refracted twice. I would suggest to take a piece of paper and make a point with pencil, then place the calcite mineral on top of the point and see whether the point splits into two or not. If it does then it is calcite.
What Colour is indicolite?
Blue Tourmaline
Rubellite is the red variety of Tourmaline; Achroite colourless; Paraiba neon blue to green; and Indicolite being the incredibly rare colour of Blue Tourmaline. Indicolite’s name originates from the Latin word for a blue coloured plant known as the “Indicum”.
What is the mineral calcite used for?
Calcite is the mineral component of limestone which is used primarily as construction aggregates, and in production of lime and cement.
Is calcite a secondary mineral?
Speleothems are secondary mineral deposits formed in caves by flowing, dripping, ponded, or seeping water. The most commonly occurring minerals are calcite, aragonite, and gypsum although many other minerals have been found in speleothems in minor amounts.
What color is Elbaite?
Tourmaline comes in many color-specific varieties, including indicolite (blue), rubellite (red), Paraiba (neon blue), watermelon (pink surrounded by green), bi-colored (two colors in one crystal), and multi-colored (three or more colors in one crystal)….Elbaite.
| Catalog Number | NMNH G10699-00 |
|---|---|
| Weight | 24.73 ct |
Where is calcite most commonly found?
Calcite occurs in diverse crystal shapes and colors. Calcite found throughout the world, most notably in: Tsumeb Mine, Namibia, Brazil, Germany, Romania, England, Canada, China, Pakistan, Mexico, Russia, New Jersey, Elmwood Mine, Tennessee, Kansas, Indiana, Illinois, Ohio, Nevada, Missouri, Colorado, Massachusetts.
Where is albite most commonly found?
Albite, common feldspar mineral, a sodium aluminosilicate (NaAlSi3O8) that occurs most widely in pegmatites and felsic igneous rocks such as granites. It may also be found in low-grade metamorphic rocks and as authigenic albite in certain sedimentary varieties.
Is albite a quartz?
. It is a tectosilicate. Its color is usually pure white, hence its name from Latin, albus. It is a common constituent in felsic rocks….
| Albite | |
|---|---|
| Category | plagioclase, feldspar, tectosilicate |
| Formula (repeating unit) | NaAlSi 3O 8 or Na 1.0–0.9Ca 0.0–0.1Al 1.0–1.1Si 3.0–2.9O 8 |
| Strunz classification | 9.FA.35 |
Where can I find mineral information for elbaite?
Elbaite: Mineral information, data and localities. This section is currently hidden. Click the show button to view. Tourmaline Group. Elbaite-Liddicoatite Series, Dravite-Elbaite Series, and the Elbaite-Schorl Series. The OH-analogue of fluor-elbaite. “Paraíba tourmaline” elbaites may bear significant amounts of Pb (Pb 2+, Pb 4+) and Bi (Bi 3+ ).
What are the different colors of elbaite crystals?
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.
What is the chemical formula for fluorine elbaite?
– 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.
What kind of crystal is elbaite tourmaline made of?
– 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 inclusion s of copper. – Pink to red variety of Elbaite Tourmaline.