Verde Issogne Marble (Serpentinite)
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Description: Verde Issogne Marble is a Commercial name for a dark green Serpentinite with light and white green veins of the Cretaceous period. This stone internationally may be nominated as a marble but in the area of application of the European Standard this stone must be nominated as serpentinite. The veining and colour varies considerably and a small sample of Verde Issogne Marble may not be representative of the whole slab therefore 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. Verde Issogne Marble is ideal for both interior and exterior use however polish is only constant inside.
Products: Suitable for construction projects both commercial and domestic, prefabricated countertops/worktops, vanities, tiles, backsplashes, paving, fireplaces and memorials.
Surface Finish: Verde Issogne Marble 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 Verde Issogne however excessive attempts at sealing it could actually create a residue film build-up.
Block Sizes: This is a quarry yielding selectable, grades of marble with blocks suitable for gangsaw size down to economical tile-sized blocks. For commercial projects it is important to ensure that blocks are selected 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: Verde Issogne Marble is quarried in the Aosta Region, Italy There are several quarries, large and small, with several varieties and many trade names. Some quarry have a selectable lighter or darker green background..
Synonyms: Gruener Alpenmarmor, Verde Alpi, Verde Cevino, Verde des Alpes, Vert des Alpes
Marble: Is a metamorphosed limestone, composed of very pure calcium carbonate, CaCO3. The softness of marble and its relative isotropy and homogeneity make marble very desirable for sculpture and building stone. Although marble comes from limestone, the temperatures and pressures necessary to form marble usually destroy any fossils that may have been present in the limestone.
Marble derives its name from the Greek marmaros, shining stone. [source: OED2]. This stem is also the basis for the English word marmoreal meaning "marble-like". In folklore, marble is associated with the astrological sign of Gemini. Pure white marble is an emblem of purity. It is also an emblem of immortality, and an ensurer of success in education.
Serpentine: Any of a group of hydrous magnesium-rich silicate minerals. The composition of these common rock-forming minerals approximates Mg3Si2O5(OH)4. Serpentinite is a rock composed of one or more serpentine group minerals. Minerals in this group are formed by serpentinization, a hydration and metamorphic transformation of ultramafic rock from the Earth's mantle.
Mineral Composition: Average by %
Compression Tensile Strength: kg/cm2
Tensile Strength After Freeze-Thaw Cycles: kg/cm2
Unitary Modulus Of Bending Tensile Strength: kg/cm2
Heat Expansion Coefficient: mm/m°C
Water Absorption: By Weight 0.19 - 0.48%
Impact Strength: cm
Frictional Wear: mm
Mass By Unit Of Volume: 2660 - 2700kg/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.