What type of rock is under Belfast?
The Antrim Lava Group rocks are basalts (extrusive igneous rocks), produced by the same volcanic activity as the sills about 60 million years ago.
Where can metamorphic rocks be found in Northern Ireland?
The Sperrin Mountains, in the west of N. Ireland, are made up largely of ancient metamorphic rocks, such as schist (inset) and quartzite.
What crystals are found in Northern Ireland?
Many are crystalline. More than 5000 minerals are known, with several of them first discovered in Northern Ireland—Larnite, Garronite, and Gobbinsite. Our Earth’s Treasures gallery contains spectacular specimens of coloured crystals, grey metal ores, sparkling gemstones, and gold nuggets.
Where is limestone found in Northern Ireland?
In Northern Ireland most limestones are either Carboniferous in age, found particularly in Armagh and Fermanagh, or Cretaceous, found in Antrim and Derry. The latter is the very pure Ulster White Limestone Formation, about 80 million years old, formed of countless microscopic skeletons of marine algae.
Can you find gemstones in Northern Ireland?
A range of semi-precious stones is known from various localities in Northern Ireland, although none are of gem quality. Amber has been found in the Lough Neagh Group. Beryl and rock crystal have long been known in drusy cavities in granites of the Mourne Mountains (Chapter 15).
Where is Marble found in Northern Ireland?
Connemara marble or “Irish green” is a rare variety of marble found in Connemara, Ireland with a distinct green colour. It is commonly used as a gemstone and for decorations. Due to its colouration, it is commonly associated with the Irish identity.
What is limestone used for in Belfast?
Limestone contains calcium so it is used as an ingredient of toothpaste. It is also added to animal feed to help strengthen the bones of chickens and cattle. uarry products are widely used in the building industry.
Is there amethyst in Ireland?
AMETHYST IN IRELAND
Although it’s known as the “emerald isle” some of the world’s most gorgeous amethyst can be found in Ireland. More specifically, you’ll find amethyst on Achill Island, the largest of the Irish isles situated off the west coast of mainland Ireland.
Where is kimberlite rock found?
Generally speaking, kimberlites are found only in cratons, the oldest surviving areas of continental crust, which form the nuclei of continental landmasses and have remained virtually unchanged since their formation eons ago.