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Brazilianite, whose name derives from its country of origin, Brazil, is a typically yellow-green phosphate mineral, most commonly found in phosphate-rich pegmatites. Image File history File links Download high resolution version (621x744, 347 KB) Brazilianite (NaAl3(PO4)2(OH)4 ) crystal Origin: Divino da Laranjeira, MG, Brazil Description:A green color crystal ~(3 x 2cm) Source: The authors are owners Date: created 2005-12-07 Authors: Tom Epaminondas (mineral collector) / Eurico Zimbres...
This article is about minerals in the geologic sense; for nutrient minerals see dietary mineral; for the band see Mineral (band). ...
General Name, Symbol, Number sodium, Na, 11 Chemical series alkali metals Group, Period, Block 1, 3, s Appearance silvery white Atomic mass 22. ...
Aluminum is a soft and lightweight metal with a dull silvery appearance, due to a thin layer of oxidation that forms quickly when it is exposed to air. ...
This article is about the chemical element. ...
General Name, Symbol, Number oxygen, O, 8 Chemical series Chalcogens Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ...
Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: −O−H It has a charge of −1. ...
Color is an important part of the visual arts. ...
In mineralogy, shape and size give rise to descriptive terms applied to the typical appearance, or habit of crystals. ...
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. ...
Cleavage, in mineralogy, is the tendency of crystalline materials to split along definite planes, creating smooth surfaces, of which there are several named types: Basal cleavage: cleavage parallel to the base of a crystal, or to the plane of the lateral axes. ...
For fractures in bones, see Fracture (bone). ...
Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer. ...
For the file system called Lustre, see Lustre (file system) Lustre (American English: luster) is a description of the way light interacts with the surface of a crystal, rock or mineral. ...
The refractive index of a material is the factor by which the phase velocity of electromagnetic radiation is slowed relative to vacuum. ...
Pleochroism is an optical phenomenon where due to double refraction of light by a colored gem or crystal, the light is divided into two paths which are polarized at a 90° angle to each other. ...
The term streak is used in several ways: Streaking, the act of running around nude in public places. ...
Relative density (also known as specific gravity) is a measure of the density of a material. ...
The melting point of a solid is the temperature at which it changes state from solid to liquid. ...
A solvent is a liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution. ...
In chemistry, a phosphate is a polyatomic ion or radical consisting of one phosphorus atom and four oxygen. ...
This article is about minerals in the geologic sense; for nutrient minerals see dietary mineral; for the band see Mineral (band). ...
Pegmatite is a very coarse-grained igneous rock that has a grain size of 20 mm or more; such rocks are referred to as pegmatitic. ...
It occurs in the form of perfect crystals grouped in druses, in pegmatites, and is often of precious-stone quality. The only noted deposit of brazilianite is in the surroundings of Conselheiro, Pena, in the state of Minas Gerais in Brazil. During the past few years this deposit has yielded a great quantity of beautiful raw material, which has included crystals of surprisingly large dimensions and perfectly bounded crystal faces. Quartz crystal A crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions. ...
Pegmatite is a very coarse-grained igneous rock that has a grain size of 20 mm or more; such rocks are referred to as pegmatitic. ...
Peña is a Hispanic surname. ...
Minas Gerais (pronounced IPA ) is one of the states of Brazil, the second most populous in the federation. ...
 Braziliatine crystals on muscovite Some of these are found on leaves of muscovite with their strong silvery glitter, ingrown in their parent rock. Such specimins are not ground, but find their way into museums and private collections. The most exquisite crystals, dark greenish-yellow to olive-green, sometimes measure up to 12 cm in length and 8 cm in width. Crystals of similar shape and dimensions have discovered in another deposit in Minas Gerais, near Mantena, but they lack the perfection of the crystal bounding. Brazilianites have also been discovered in many large collections; they were from the Palermo mine and the Charles Davis mine in Grafton County, New Hampshire, USA. It is a much sought after precious stone, usually ground into facet cuts, and it is a very popular item with collectors. Image File history File linksMetadata Brazilianite_with_muscovite. ...
Image File history File linksMetadata Brazilianite_with_muscovite. ...
Muscovite layer Muscovite, also known as potash mica, is a phyllosilicate mineral of aluminium and potassium with formula: KAl2(AlSi3O10)(F,OH)2. ...
Grafton County is a county located in the state of New Hampshire. ...
State nickname: Granite State, Mother of Rivers, White Mountain State, Switzerland of America [1] Official languages English Capital Concord Largest city Manchester Governor John Lynch (D) Senators Judd Gregg (R) John Sununu (R) Area - Total - % water Ranked 46th 24,239 km² 3. ...
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