Gris Perla Granite From Spain
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Description: Gris Perla granite is a Commercial name for a medium to coarse-grained, white to light grey granite (granodiorite) of the Carboniferous period, with big white or light grey feldspar crystals. This stone internationally may be nominated as a granite and in the area of application of the European Standard this stone must be nominated as a granite. A small sample of Gris Perla granite is usually representative not having a wide variation in colour and veining however swatch samples must be approved for large projects to ensure that the blocks are all extracted from the same quarry face for matching purposes. During the polishing process a clear epoxy resin filler may be used to fill any micro fissures or tiny pitting however this does not affect the integrity of the stone, it merely provides an even smoother surface finish. Gris Perla Granite is suitable for both interior and exterior use futhermore is frost resistant and with a constant polish.
Products: Suitable for construction projects both commercial and domestic, prefabricated countertops/worktops, vanities, tiles, backsplashes, paving, fireplaces and memorials.
Premium Quality Slab Sizes 2 & 3cm
Standard Slab Sizes 2 & 3cm
Granite Countertops 2 & 3cm
Calibrated Tiles: Standard sizes available are:
305 x 305 x 10 mm (12" x 12" x 3/8")
More granite tile and production information.
Surface Finish: Gris Perla Granite looks best with a gloss polished surface but is also available as honed, leather/satin, river-washed/antique, thermal/flamed, brushed and sandblast finish.
Sealing: Test with a small sample. It is possible that a sealant can be used on Gris Perla however excessive attempts at sealing it could actually create a residue film build-up.
Block Sizes: This is a quarry yielding selectable, grades of granite with blocks suitable for gangsaw size down to economical tile-sized blocks. A small sample of Gris Perla granite is usually representative not having a wide variation in colour and veining however for large projects and matching ensure all the raw material comes from the same quarry face.
Rough blocks are usually exported by Break Bulk however intermodal containerisation is available at extra cost. Finished products are packed into sea-worthy wooden crates and loaded into containers.
Quarry Location: Gris Perla granite is quarried near Canlo De Vello, Meis, Pontevedra, Galicia, Spain.
Synonyms: Granito No. 8, Grey Pearl
Granite: A coarse or medium-grained intrusive igneous rock that is rich in quartz and feldspar; it is the most common plutonic rock of the Earth's crust, forming by the cooling of magma (silicate melt) at depth. The principal constituent of granite is feldspar. Both plagioclase feldspar and alkali feldspar are usually abundant in it, and their relative abundance has provided the basis for granite classifications. In most granite, the ratio of the dominant to the subdominant feldspar is less than two. Rocks containing less than 20 percent quartz are almost never named granite, and rocks containing more than 20 percent (by volume) of dark, or ferromagnesian, minerals are also seldom called granite. The minor essential minerals of granite may include muscovite, biotite, amphibole, or pyroxene. Biotite may occur in granite of any type and is usually present, though sometimes in very small amounts.
Granodiorite: A medium to coarse-grained rock that is among the most abundant intrusive igneous rocks. It contains quartz and is distinguished from granite by its having more plagioclase feldspar than orthoclase feldspar; its other mineral constituents include hornblende, biotite, and augite. The plagioclase (andesine) usually forms twinned crystals, sometimes wholly encased by orthoclase. The mode of formation and occurrence, physical appearance, and mineralic composition and texture of granodiorite are much like those of granite; granodiorite is darker in colour, however, because of its greater plagioclase content.
Mineral Composition: Quartz, Microcline, Plagioclase, Biotite; Secondary Minerals: Hornblende, Apatite, Zircone, Sericite, Chlorite, Epidote, Mafite.
Compression Tensile Strength: 1425 kg/cm2
Unitary Modulus Of Bending Tensile Strength: 139 kg/cm2
Heat Expansion Coefficient: 0.0069 mm/mC
Water Imbibition Coefficient: 0.002700
Impact Strength: 61 cm
Frictional Wear: 3.50 mm
Mass By Unit Of Volume: 2603 kg/m3
Hardness (Moh's Scale):
Note: These figures and details are given for guidance purposes only, no reliance should be taken as to their accuracy.