Mongolia Black Granite From Mongolia
Please click on image to enlargen, this is an average sample only. Your monitor settings may affect appearance.
Description: Mongolia Black granite is a fine to medium-grained, dark green to black polygonal basalt. This stone internationally may be nominated as a granite but in the area of application of the European Standard this stone must be nominated as a basalt. Being volcanic the veining and colour varies considerably and a small sample of Mongolia Black Granite 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. Mongolia Black Granite is suitable for both interior and exterior use futhermore is frost resistant and probably with a constant polish.
The colour and veining can vary enormously as can be seen from the polished slab images. It is not an Absolute Black Granite.
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: Mongolia Black granite takes a gloss polished surface but is also available as honed, leather/satin, river-washed/antique, thermal/flamed, brushed and sandblast finish. We never use colour enhancers.
Sealing: Test with a small sample. It is possible that a sealant cannot be used on Mongolia Black and excessive attempts at sealing it could actually create a residue film build-up.
Block Sizes: There are several quarries yielding selectable, grades of granite with blocks usually no more than 100cm in height plus with limited lengths unsuitable for large random slabs however many 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: Mongolia Black Granite is quarried in Inner Mongolia, North of China. Owing to severe winter weather conditions quarrying is not an all year-round possibility and is usually closed October to April.
Synonyms: Ebony Black Mongolia Granite, G 133, Menggu Black Granite, Menggu Hei Granite, Mongol Basalt, Mongolia Black Basalt, Mongolian Black Granite, Nei-meng-ku Black Granite, Neimang Black Granite, Nero Mongolia Granite, Super Mongolia Black Granite
Basalt: An extrusive igneous (volcanic) rock that is low in silica content, dark in colour, and comparatively rich in iron and magnesium. Some basalts are quite glassy (tachylytes), and many are very fine-grained and compact. It is more usual, however, for them to exhibit porphyritic structure, with larger crystals (phenocrysts) of olivine, augite, or feldspar in a finely crystalline matrix (groundmass). Olivine and augite are the most common porphyritic minerals in basalts; porphyritic plagioclase feldspars are also found. Basaltic lavas are frequently spongy or pumiceous; the steam cavities become filled with secondary minerals such as calcite, chlorite, and zeolites.
Basalts may be broadly classified on a chemical and petrographic basis into two main groups: the tholeiitic and the alkali basalts. Tholeiitic basaltic lavas are characterized by calcic plagioclase with augite, pigeonite or hypersthene, and olivine (rarely) as the dominant mafic minerals; basalts without olivine are also well represented. Tholeiitic basalts, which contain 45 to 63 percent silica, are rich in iron and include the tholeiites (basalts with calcium-poor pyroxene).
Mineral Composition: Average by %
Compressive Strength: 153.8 MPa
Flexural Strength: 15.4 MPa
Tensile Strength After Freeze-Thaw Cycles: kg/cm2
Unitary Modulus Of Bending Tensile Strength: kg/cm2
Heat Expansion Coefficient: mm/mC
Water Imbibition Coefficient: 0.29%
Density: 2640 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.