Identification of oklase stone and its use
Euclase (in English: Euclase) with the chemical formula AlBe[OH-SiO4] is a group of minerals and has full violet luminescence. It is derived from the word classus. Euclase is a rare beryllium aluminum hydroxide silicate mineral that crystallizes in the monoclinic system. It has the chemical composition of BeAlSiO4(OH). Ochla crystals are commonly found in granitic pegmatites and low-temperature hydrothermal sediments. Massive to fibrous oclase is commonly found in schists and phyllites. This mineral is rare, usually present in small amounts, and since most oclase is colorless to white, it can be found in nature
Oklaz sources
Oklaz was first reported from the Orenburg region in the Ural Mountains of Russia, where it occurs with other materials such as precious stones and gold in river sands. The most important source of gem-quality ochlaz today is from Ouro Preto, in the Minas Gerais region of Brazil. Notable OKLAZ events include: Australia, Austria, China, Colombia, Colorado (USA), Germany, Russia and Zimbabwe
Oclaz characteristics table
Euclase
AlBe(OHSiO4)
Monoclinic
Crystallization system
Silicate
Classification
/FULL – Corresponds to level /010
face
Glass-diamond
polished
Shellfish
fracture
Transparent – semi-opaque
transparency
crispy
Hard type
magnetic feature
Crystal – granular – radial aggregate
Appearance forms
rare West and East Germany, Austria, Russia, Brazil, Zaire, Tanzania, India and Zimbabwe
Gisman
Insoluble in acids
chemical properties
BeO=17.28% Al2O3=35.18% SiO2=41.34% H2O=6.2% and Zn inclusions
chemical mixture
Colorless – black – dark red
mineral color
Black
line effect color
Cleavage – X-rays
Differences with similar minerals
Akroite – Topaz
Mineralogical analogy
Albite – Beryl – Phenakite
Paragenesis
Hydrothermal – alpine – pegmatite – alluvial veins
origin of formation
Prism – parallel and vertical
The shape of the crystals
Application
place of origin
Brazil
Other Features
It has full violet luminescence
