Orbicular Granite Finland
200 x 100 trade type of stone.
Orbicular granite finland. The closest site is in namaqualand south africa. Kugelgranit orbicular granite country of origin. Welcome to ask the ruskiavuori orbicular granite price from finnish ruskiavuori orbicular granite manufacturers. This structure is from the mid proterozoic eon and was formed approximately one billion years ago.
These rocks have a unique appearance due to orbicular. The most common theory is that they were developed in a hot spot and as the feldspar crystals fall into the granitic magma they would gather these layers as they rise to the top then fall to the bottom of the pocket that they are formed in. These rocks have a unique appearance due to orbicules concentrically layered spheroidal structures probably formed through nucleation around a grain in a cooling magma chamber due to rapid physical changes. Granite scientific type of stone.
Blogs do not get more obscure than that but finland has over a third of the known deposits of this rare form of granite. This new finish material is the first real orbicular granite quarried. Other similar sites in finland and chile enjoy the status of protected site. Almost one third of known orbicular rock occurrences are from finland.
Aug 29 2013 from what i understand about orbics is that no geoloigst knows how they were made. The first quarry of an orbicular granite was recently opened in finland. The orbicular granite formation is very rare. Orbicular granite also known as orbicular rock or orbiculite is an uncommon plutonic rock type which is usually granitic in composition.
The details in the pictures indicate soft ductily deformed structures in part broken off so that the outer material could flow in or the inner material out. Rapakivi granite obtained commercially spheres up to approx. This would happen several times to get the. Orbicular granite also known as orbicular rock or orbiculite is an uncommon plutonic rock type which is usually granitic in composition.
Granite derived from magma is ordinarily crystalline but in orbicular granite for unknown reasons the crystals form into spheres and thus ring shaped when cut across. First orbicular granite quarry opened in finland while there are several other orbicular rocks in the market those materials are either diorites or gabbros. Ruskiavuori orbicular granite is finland brown granite colors ruskiavuori orbicular granite products include ruskiavuori orbicular granite blocks ruskiavuori orbicular granite tiles ruskiavuori orbicular granite slabs ruskiavuori orbicular granite countertops and vanity tops etc. 5 cm actually not a true orbicular granite.
Orbicular granite additional remarks. Orbicular granite also known as orbicular rock or orbiculite is an uncommon plutonic rock type which is usually granitic in composition.