### substance:

Granite
* Most granite consists of quartz
  - contains quartz
  - granites are impervious to scratches, staining and heat blistering or cracking
* Some granite contains potassium
  - granites are relatively nonmagnetic too and also produce smooth magnetic contours
* are plutonic rocks that have cooled at great depths below the surface
  - usually low in iron-magnesium minerals and contain abundant quartz and feldspar
* characteristically forms irregular masses and makes up a large part of every continent.
* coarse grained crystalline igneous rock composed primarily of quartz and feldspar.
* common example of igneous rock
  - igneous rock found in New England
  - intrusive igneous rock
  - rock in continents
* composite of three minerals, feldspar, quartz and mica.
* conducts sound ten times faster than air.
* contains lots of silica , so the lava becomes very viscous
  - mineral crystals called zircons , which often contain radioactive elements
  - visible crystals, whereas rhyolite is fine-grained
* disintegrates and crumbles into particles of mica, quartz and feldspar.
* exfoliate and erode in layers much like an onion.
* familiar igneous rock and one source of sediment.
* form at great depth in the Earth's crust.
* forms as a volcanic material deep under the earth and cools very slowly.
* generic term for intrusive acid igneous rocks rich in quartz and feldspar.
* harder and more resistant building material than calcite.
* has degrees.
* have an undeserved reputation for being a major source of radon in our region.
* is an example of a rock with a high proportion of radioactivity.
* is an example of an igneous rock
  - intrusive rock
* is an igneous rock formed from molten material generated at great depth below the surface
  - found along the entire length of the eastern part of the state
* is an igneous rock that cools below the earth's surface
  - deep inside a volcano rather that erupting out
  - is composed of four minerals
* is an igneous rock, formed by volcanic action
  - from slow cooling of volcanic magma
  - like lava because it was formed by crystallization of magma
  - important building stone
  - intrusive, igneous rock
  - batholiths
  - called an igneous rock because it forms from molten rock
  - dense , and can be cut , carved and shaped
  - flamed by applying blowtorch-strength heat to the surface of the stone
  - formed in a slow cooling process
* is found all over the world and can be found in many colors
  - in many countries of the world
* is hard and dense
  - but porous
  - igneous rock, formed by the melting and cooling of a variety of minerals
  - light in color and is known to erode in blocks
* is made of little pieces of quartz, mica, and other particles
  - magma that cooled while still deep underground
* is made up of quartz and mica
  - primarily of quartz, mica and feldspar
  - nature's ideal material for countertops
  - nearly impervious to weathering from temperature changes and from airborne chemicals
  - now the most widely used stone for buildings, monuments, and bridges
  - of world-wide distribution and has many varieties, differing in texture and coarseness
* is one of South Africa's most useful and beautiful natural resources
  - the most common types of igneous rocks and is created from magma
  - pushed up from below the earth's crust and common igneous rock
* is quarried for the building industry
  - use as building stone and monuments
  - in many places in the world including the United States
  - rock formed by fire
  - second only to diamonds in hardness
  - stones
* is the bedrock undergirding all continents
  - best-known igneous rock
  - foundational rock for the continents, and is found throughout the world
  - largest minority-controlled owner of major market television stations in the country
* is the most abundant and dense material in the world
  - beautiful, strong, resistant rock ever crystallized
* is the most common coarse-grained igneous rock
  - form of an igneous stone
  - igneous rock in the Earth's crust
  - rock that makes up the majority of the continental crust
  - traditional rock in New Hampshire
* is the ultimate in beauty, ease of maintenance and durability
  - silicate rock
* is used for long lasting monuments and for trim and decoration on buildings
  - making gravestones, statues and countertops too
* is very hard and extremely durable
  - inert and hence desirable as construction material for exposed surfaces
  - stone and difficult to carve
  - solid and hard because it tends to have no cracks or seams
  - strong and durable stone
* light-colored igneous rock with grains large enough to be visible with the unaided eye.
* more expensive material than timber or cement, but it is easy to work with.
* natural for interior landscaping
  - stone surface
* occur on more than half of the shrublands.
* occurs in two separate masses.
* resists weathering more than layered and bedded sedimentary rocks do.
* rock composed of grains of several minerals including feldspar and quartz
  - made of the minerals mica, feldspar, quartz, and hornblende
* tend to be solidified stocks from which volcanos originated.
* type of rock that forms intrusively and slowly.
* typical igneous rock found in continental crust
  - intrusive rock, being coarse grained
* usually have a medium to coarse grained texture.
* very hard, semi-porous stone
  - strong and durable rock
* weathers one inch in ten thousand years.
+ Granite, Uses: Igneous rocks
  * Granite is dense, and can be cut, carved and shaped. It is resistant to water and pollution, and has a range of different colours.
  * Kitchen benches are often made of polished granite. Granite is found in many countries of the world.