Zimbabwe Black Granite

Zimbabwe Black Granite Image

Description

Zimbabwe Black Granite is quarried near Mutoko, Mashonaland East province, Zimbabwe, it is a fine-grained, black gabbro/norite suitable for granite worktops and tiles, wall cladding and prestigious architectural elements. A small sample of Zimbabwe Black 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.

Zimbabwe Black Granite is eminiently suitable for interiors and exterior work having a constant polish and being frost resistant.

Black Granite Shades

As a generalisation most black granite quarries have varying shades of black. This variation in shading is completely natural and usually occurs with the ground level of the quarry being lighter with the deeper the granite is quarried becoming darker, however some quarries may vary in shade along its length or width. The experienced quarryman knows where the lighter and darker shades are and can supply to the customer's preferences. All of our Indian black granites are from the Deccan Plateau.

NOTE: It is a fact that some unscrupulous dealers will actually dye the lighter shades and try to sell them as the Ultimate Black, Premium Black or Zimbabwe Black product at its correspondingly higher price, with totally normal usage these "doctored" blacks will lose their artificially applied darkness. To check for dying try the lemon juice or acetone test. Do ensure that the granite is washed clean before doing this otherwise it may simply be general dirt. Take a clean white rag and apply some lemon juice or acetone to the granite surface. If any residue or black appears on the rag then it has been dyed. Also, if you have several small sample choices, leave a drop of the lemon juice for five minutes on the polished surface, wipe the surface clean and observe the results, once again any dull spot or patch and the material has been doctored.


To assist all potential black granite purchasers we have produced an Absolute Black Granite Guide.

Products

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

Surface Finish

Zimbabwe Black granite looks best with a gloss polished surface but is also available as honed, leather/satin, river-washed/antique, thermal/flamed, flamed & brushed, water-jet, bush-hammered, sandblast and sawn finish.

Sealing

Test with a small sample. It is most unlikely that a sealant can be used on this granite due to the very tight grain formation, attempts at sealing it could actually create a residue film build-up.

Synonyms

Absolute Black Zimbabwe, Black Zimbabwe, Negro Zimbabwe, Nero Assoluto Z, Nero Assoluto Zimbabwe, Nero Zimbabwe, Noir Zimbabwe, Zimbabwe, Zimbabwe Black, Zimbabwe-Black.

Quarry Location

Zimbabwe Black granite is quarried near Mutoko, Mashonaland East province, Zimbabwe. Production about 1,500 M3 per month.

Zimbabwe Black Granite Sample

Zimbabwe Black Granite Sample Image

Granite Slabs

Zimbabwe Black granite slabs are available in standard 20mm and 30mm thickness for random slabs, cut-to-size (dimensioned) and prefabricated to the customer's specifications, 40mm thick are produced but are not usually held in stock for immediate despatch.

Standard Slab Sizes
Large Gangsaw(2800mm & above x 1800mm & above)
Medium Gangsaw(2200mm & above x 1200mm & above)
Vertical Cutter(2200mm & above x 600~900mm)

Premium Quality Slab Sizes
When available 3000+mm x 2000+mm

Granite Countertops
Free length or made to your dimensions, standard sizes are
2400~3200 x 600/630/700/900/1000/1200 x 30 mm

Memorial/Monumental Slabs
50mm through to 200mm thick are cut to customer specifications, please Contact Us with the material(s), sizes and finishes you require.

Granite Tiles

Zimbabwe Black granite Premium & Commercial quality calibrated, bevelled & grooved matching granite tiles.

Standard Tile Sizes
305 x 305 x 10 mm (12" x 12" x ⅜")
610 x 305 x 10 mm (24" x 12" x ⅜")
400 x 400 x 10 mm (15¾" x 15¾" x ⅜")
457 x 457 x 10/12 mm (18" x 18" x ⅜~½")
610 x 610 x 15/18 mm (24" x 24" x ⅗~¾")

Furthermore 305/400/457/610 mm x Freelength, normally up to 2000mm (78.75") for you to cut to length on site. Longer lengths can easily be produced HOWEVER this could possibly create an on-site handling and cutting production challenge.

As you can see our granite tile production size capabilities are extremely flexible, please Contact Us with the material(s), sizes and finishes you require.

CE Marking Of Natural Stone

Contractors can be responsible for the accuracy of the data, to learn more about this directive please read here.

Technical Specifications

Compressive Strength: /kg cm2
After Freezing: /kg cm2
Ultimate Tensile Strength: /kg cm2
Water Absorption: 0.12 - 0.16%
Volumetric Weight: 2995 - 3090 kg/m3
Hardness (Moh's Scale): 6-7

Note: These figures and details are given for guidance purposes only, no reliance should be taken as to their accuracy.

Gabbro

A dark-coloured, coarse-grained intrusive igneous rock. Gabbro is very similar to basalt in its mineral make up. It is composed mostly of the mineral plagioclase feldspar with smaller amounts of pyroxene and olivine.

Norite

A mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite and hypersthene with olivine. Norite is essentially indistinguishable from gabbro without thin section study under the petrographic microscope. The principal difference between norite and gabbro, however, is the type of pyroxene of which it is composed; norite is predominately composed of orthopyroxenes, largely high magnesian enstatites, whereas the principal pyroxenes in gabbro are clinopyroxenes, generally medially iron-rich augites.

Quarry Blocks

These are quarries yielding several, selectable, grades of granite with blocks suitable for gangsaw size down to economical tile-sized and monument blocks. Extraction commenced in 1971. For commercial projects it is important to ensure that blocks are selected from the same quarry face, do not try and match-up with alternative black granite sources.

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.

Granite Saws Image
Zimbabwe Black  Granite Polished Slab Image
Warehouse Image
Zimbabwe Black Granite Quarry Image


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