Quality granite and marble suppliers / installers of bathroom and kitchen worktops, covering Watlington, Wallingford, High Wycombe, Marlow, Oxford, Oxfordshire,
Buckinghamshire, Chinnor, Thame, Beaconsfield, Henley.
Granite and marble worktops / surfaces, for bathrooms and kitchens, in Watlington, Wallingford, High Wycombe, Marlow, Didcot, Oxford, Oxfordshire (Oxon), Buckinghamshire (Bucks), Chinnor, Thame, Princes Risborough,
Aylesbury, Bicester, Beaconsfield, Henley, Bourne End, Maidenhead, Reading, Berkshire (Berks), Gerrards Cross, Denham, Uxbridge, Slough. We also do fireplaces, work tops, countertops, quartx, bathroom vanity units, and dining tables.
Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granites usually have a medium to coarse grained texture. Occasionally some individual
crystals (phenocrysts) are larger than the groundmass in which case the texture is known as porphyritic. A granitic rock with a porphyritic texture is sometimes known
as a porphyry. Granites can be pink to dark gray or even black, depending on their chemistry and mineralogy. Outcrops of granite tend to form tors, and rounded massifs.
Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels.
Granite and marble worktops / surfaces, for bathrooms and kitchens, in Watlington, Wallingford, High Wycombe, Marlow, Didcot, Oxford, Oxfordshire (Oxon), Buckinghamshire (Bucks), Chinnor, Thame, Princes Risborough,
Aylesbury, Bicester, Beaconsfield, Henley, Bourne End, Maidenhead, Reading, Berkshire (Berks), Gerrards Cross, Denham, Uxbridge, Slough. We also do fireplaces, work tops, countertops, quartx, bathroom vanity units, and dining tables.
Granite is nearly always massive (lacking internal structures), hard and tough, and therefore it has gained widespread use as a construction stone. The average density of
granite is 2.75 g/cm3. The word granite comes from the Latin granum, a grain, in reference to the coarse-grained structure of such a crystalline rock. Granitoid is used
as a discriptive field term for general, light colored, coarse-grained igneous rocks for which a more specific name requires petrographic examination.[2]
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Granite and marble worktops / surfaces, for bathrooms and kitchens, in Watlington, Wallingford, High Wycombe, Marlow, Didcot, Oxford, Oxfordshire (Oxon), Buckinghamshire (Bucks), Chinnor, Thame, Princes Risborough,
Aylesbury, Bicester, Beaconsfield, Henley, Bourne End, Maidenhead, Reading, Berkshire (Berks), Gerrards Cross, Denham, Uxbridge, Slough. We also do fireplaces, work tops, countertops, quartx, bathroom vanity units, and dining tables.
Granite is classified according to the QAPF diagram for coarse grained plutonic rocks and is named according to the percentage of quartz, alkali feldspar (orthoclase, sanidine, or microcline) and plagioclase feldspar on the A-Q-P
half of the diagram. True granite according to modern petrologic convention contains both plagioclase and alkali feldspars. When a granitoid is devoid or nearly devoid of plagioclase the rock is referred to as alkali granite. When
a granitoid contains <10% orthoclase it is called tonalite; pyroxene and amphibole are common in tonalite. A granite containing both muscovite and biotite micas is called a binary or two-mica granite. Two-mica granites are typically
high in potassium and low in plagioclase, and are usually S-type granites or A-type granites. The volcanic equivalent of plutonic granite is rhyolite. Granite has poor primary permeability but strong secondary permeability.
Granite and marble worktops / surfaces, for bathrooms and kitchens, in Watlington, Wallingford, High Wycombe, Marlow, Didcot, Oxford, Oxfordshire (Oxon), Buckinghamshire (Bucks), Chinnor, Thame, Princes Risborough,
Aylesbury, Bicester, Beaconsfield, Henley, Bourne End, Maidenhead, Reading, Berkshire (Berks), Gerrards Cross, Denham, Uxbridge, Slough. We also do fireplaces, work tops, countertops, quartx, bathroom vanity units, and dining tables.
Granite has been intruded into the crust of the Earth during all geologic periods, although much of it is of Precambrian age. Granitic rock is widely distributed throughout
the continental crust of the Earth and is the most abundant basement rock that underlies the relatively thin sedimentary veneer of the continents.
Granite is currently known only on Earth where it forms a major part of continental crust. Granite often occurs as relatively small, less than 100 km² stock masses (stocks)
and in batholiths that are often associated with orogenic mountain ranges. Small dikes of granitic composition called aplites are often associated with the margins of
granitic intrusions. In some locations very coarse-grained pegmatite masses occur with granite.
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Granitoids are a ubiquitous component of the crust. They have crystallized from magmas that have compositions at or near a eutectic point (or a temperature minimum on a cotectic curve). Magmas will evolve to the eutectic
because of igneous differentiation, or because they represent low degrees of partial melting. Fractional crystallisation serves to reduce a melt in iron, magnesium, titanium, calcium and sodium, and enrich the melt in potassium
and silicon - alkali feldspar (rich in potassium) and quartz (SiO2), are two of the defining constituents of granite.
Granite and marble worktops / surfaces, for bathrooms and kitchens, in Watlington, Wallingford, High Wycombe, Marlow, Didcot, Oxford, Oxfordshire (Oxon), Buckinghamshire (Bucks), Chinnor, Thame, Princes Risborough,
Aylesbury, Bicester, Beaconsfield, Henley, Bourne End, Maidenhead, Reading, Berkshire (Berks), Gerrards Cross, Denham, Uxbridge, Slough. We also do fireplaces, work tops, countertops, quartx, bathroom vanity units, and dining tables.
Visit our website at
www.marbleandgraniteservices.co.uk or www.mvgranite.co.uk
This process operates regardless of the origin of the parental magma to the granite, and regardless of its chemistry. However, the composition and origin of the magma which differentiates into granite, leaves certain geochemical
and mineral evidence as to what the granite's parental rock was. The final mineralogy, texture and chemical composition of a granite is often distinctive as to its origin. For instance, a granite which is formed from melted sediments
may have more alkali feldspar, whereas a granite derived from melted basalt may be richer in plagioclase feldspar. It is on this basis that the modern "alphabet" classification schemes are based.
Granite and marble worktops / surfaces, for bathrooms and kitchens, in Watlington, Wallingford, High Wycombe, Marlow, Maidenhead, Reading, Berkshire (Berks), Gerrards Cross, Denham, Uxbridge, Didcot, Oxford, Oxfordshire (Oxon), Buckinghamshire (Bucks), Chinnor, Thame, Princes Risborough,
Aylesbury, Bicester, Beaconsfield, Henley, Bourne End, Slough. We also do fireplaces, work tops, countertops, quartx, bathroom vanity units, and dining tables.
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