rapakivi granite

As a building material, rapakivi granite is also known as "Baltic Brown".

It is made of Rapakivi granite.

Rapakivi granites have formation ages from Archean to recent and are not usually associated with orogeny.

Their sheerness is due to the rapakivi granite splitting in a sharply cubical manner.

The distinctive texture of rapakivi granite is due to oligoclase rims on orthoclase phenocrysts.

Rapakivi granites are often found associated with intrusions of anorthosite, norite, charnockite and mangerite.

Modern building uses of rapakivi granites are in polished slabs used for covering the buildings, floors, counter tops or pavements.

Since then, southern Finland's rapakivi granite intrusions have been the type locality of this type of granite.

It often occurs in association with norite, anorthosite, charnockite and rapakivi granite in Proterozoic metamorphic belts.

Rapakivi granite is a hornblende-biotite granite containing large rounded crystals of orthoclase mantled with oligoclase.

The crater is filled with sediments, between Pleistocene sediments and crushed rapakivi granite bedrock there is a layer of Paleozoic (Ordovician) limestones.

The rocks that break off the Rotes Kliff - such as flint, rhomb porphyry or Rapakivi granite - still enable an accurate determination of their origin to be made.

These rock types include iron-rich diorite, gabbro, and norite; leucocratic mafic rocks such as leucotroctolite and leuconorite; and iron-rich felsic rocks, including monzonite and rapakivi granite.