The Celtic Trinity Knot, or the Triquetra, is one of the most common of the knot ilk. The term Triquetra comes from Latin, and it means three-cornered.. There are many schools of thought when discussing the Celtic trinity knot meaning.
Definition of BERYL: Aluminum beryllium silicate with chemical formula Be3Al2Si6O18. A transparent glassy mineral, which forms hexagonal prisms. Transparent varieties (white, g
Another rare beryllium mineral is euclase, named after its perfect cleavage. Its formula is BeAlSiO 4 (OH). It is a phyllosilicate (layered, like mica; beryl is a 3D tectosilicate), found in granite pegmatites, often with topaz. Due to its hardness (7.5) and durability, it is also found in placers.eryllium is not only a moderator, but also a source of neutrons. Beryllium was considered a promising material for high-temperature nuclear reactors (carbon, of course, cannot be used). Beryllium was used as a neutron reflector to reduce the size of reactor cores. It is used in nuclear weapons for the same purpose.