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Description: Cafe Imperial Granite is a medium-grained dark brown syenite of the Precambrian period. 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 syenite. The veining and colour varies and a small sample of Cafe Imperial 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. Ideal for both interior and exterior use, Cafe Imperial Granite is frost free and polish constant.

Products: Suitable for construction projects both commercial and domestic, prefabricated countertops/worktops, vanities, tiles, backsplashes, paving and fireplaces.

Surface Finish: Cafe Imperial 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. We never use colour enhancers.

Sealing: Test with a small sample. It is possible that a sealant can be used on Cafe Imperial 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. 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: Cafe Imperial Granite is from a sheet bedrock quarry near Sitio Pasto Velho, Bocaina, Estrada Municipal Pocinhos Do Rio Verde , Ibitura, Caldas, Minas Gerais, Brazil.

Synonyms: Brown Pearl, Cafe Imperiale, Caffe Imperiale, Coffee Imperial, Imperial Coffee.

Syenite: A coarse-grained intrusive igneous rock of the same general composition as granite but with the quartz either absent or present in relatively small amounts (<5%). The feldspar component of syenite is predominantly alkaline in character (usually orthoclase). Plagioclase feldspars may be present in small quantities, less than 10%.

Mineral Composition: Average Microperthitic Alkaline Feldspar: 77%, Pyroxene: 15%, Biotite: 3%, Accessories: 5%.

Technical Specifications

Compression Tensile Strength: 1570 kg/cm2

Tensile Strength After Freeze-Thaw Cycles: 1465 kg/cm2

Unitary Modulus Of Bending Tensile Strength: 53 kg/cm2

Heat Expansion Coefficient: 0.0040 mm/mC

Water Imbibition Coefficient: 0.001200

Impact Strength: 58 cm

Frictional Wear: 0.70 mm

Mass By Unit Of Volume: 2540 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.


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