Mine: Beryl Pit, Quadaville, ON, Canada.
Crystal System: Hexagonal
Color: Green, Blue, Yellowish
Hardness: 7 1/2 - 8
Fracture: Uneven to Conchoidal
Specific Gravity: 2.6 -2.8
Transparency: Transparent to Translucent.
R.I. 1.57 -1.58
Beryl is known to be formed in by a prismatic crystal that resembles it as emerald or aquamarine as it's principal gem stone verities. These crystallized formations can also sometimes be formed in a pyramid shape which are striated parallel to their length, and may also sometimes be of vast in size. It can also form in a massive compact or columnar habits which are mainly found in granite, or granitic pegmatites, and rhyolites, but can also occur in metamorphic rocks, such as schist. Much of the emerald color is known to be mainly decomposed by traces of chromium, and in some cases vanadium. These crystal formations can also be possibly manufactured synthetically as it has been practice since 1937. Beryl in many cases may be colorless, white, green, yellow, pink, red, and blue. It's rather known to also fuse difficultly, which rounds the edges of small fragments. Other areas where it may occur can included mica schist formations, within the Ural Mountains, and within the limestone formations of Columbia. Beryl it self is also mainly formed by the association of tin and tungsten ore-bodies.
Beryl is known to also be composed of beryllium aluminum cyclosilicate with a chemical formula of Be, AL, Si O). For the most part two varieties of beryl are commonly known to include emerald and aquamarine which its crystals are mainly hexagonal in shape. But terminated crystals such as tourmaline are extremely rare in the formation of Beryl. In several cases pure beryl is classified as colorless but may also be tinted by other minerals such as chromium, and vanadium to decompose another color. Beryl can also be found in several countries around the world like Europe, Norway, Austria, Germany, Sweden, Russia, Ireland, Madagascar, Brazil, Columbia, and Mozambique. Some of the largest beryl crystals are commonly known to be found in New England within pegmatite formations.
Beryl also has its own cleavage that can only be seen under a microscope as it shows structural breaks within its crystal formation. Much of the identifications of cleavages are mainly determined by its direction and angles between them in order to provide clues to identification. In several case the crystallization in beryl is known to be formed in a hexagonal shape just like apatite. Beryl is also prismatic crystal which produces sometimes long prismatic crystals which are inhabited by it's formation. Other times beryl can also be formed within lepidolite which contains a small portion of mica with a substantial portion of lithium that makes its the earths common lithium bearing material. Lepidolite is also one of the world oldest rock type that is known to be older than 10 million years. Not to mention beryl is also a cyclosilicate which gets its determination from a phrase known as cyclo, that means circle. These terms are known to be gathered due to the crystal that consist of closed ring like circles of tetrahedra which share corners. Each of these tetrahedrons are known to also share two of its oxygen atoms with other tetrahedra.
The structure of beryl is known to very clearly exhibit the presence of six-fold Si6O that is tetrahedral silicate ring which are cross linked to each other by tetrahedral BeO4 groups and octahedral AlO6 groups. The Be and Al polyhedral lie in sheets between layers of Si6O18 rings, which the vertical slacking parallel to the C-Axis of the rings provides channelways for interstitial solid solution of the molecules such as H2O and CO2, and also for Na+ by coupled substitutions. Na+ Li+ Be2+ + l_l (= vacancy in channelways. There is also some deviation from the formula given above due to interstitial solid solutions, and an H2O-rich composition that results in the formula Be3Al2(Si6O18) nH2O, a Na containing structure results in the formula Na (Be2, Li) Al2 (Si6O18).
Beryl is commonly recognized by its hexagonal crystal form and greenish color that's distinguished from apatite by greater hardness and from quartz by higher specific gravity. Its a very common type of constituent of granitic rocks and pegmatites. Its also found in mica schist and can also be associated with tin ores. Transparent colored gem verities are typically distinguished on the basis of color: Aquamarine is rather a pale greenish blue and transparent. Morganite is a rose beryl to pale pink to deep rose. Emerald is another type of beryl that is clear, and golden yellow, which is also known a chrysoberyl.
Beryl Crystal Structure
The Beryl Structure contains tubular cavities that are typically created by hexagonal Si6O18 rings which are super imposed. Beryl, Be3Al2(Si6o18), typically crystalizes in the hexagonal space group P 6/m 2/c (P6/mcc) crystal class 6/m 2/m 2/m. This graph rather outlines the primitive hexagonal lattice type and unit cell. These foremost unit cells are chosen between equipoints at the centers of the equivalent hexagonal Si6O18 rings. These rings are cross-linked to each other by sheets of Be and Al polyhedral (Be tetrahedral, and Al Octahedra. Note that the top and bottom rings in the structure are at 30 degrees to the rings at half way.
Beryl is typically used as a stone that enhances the ability to do all the things which you may need to do within the required period. The mineral is also used as a way to deal with the daily stresses that life may bring to a person. Its typically a type of mineral that will help you let go of your unnecessary or unwanted emotion baggage. Beryl typically has energies that will fill you with courage and confidence to figure out the next step in your life journey.