Stargate Granite From Zimbabwe
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Description: Stargate granite, a.k.a. Cosmos, is a black gabbro usually with silver flecks. 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 gabbro. The veining and colour varies and a small sample of Stargate 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. Stargate Granite is suitable for both interior and exterior use futhermore is frost resistant and with a constant polish.
Stargate granite does not have golden-yellow sparkling broncite scales therefore should not be confused with the Indian Black Galaxy / Star Galaxy 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: Stargate 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 Stargate granite 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. Production about 500 M3 per month.
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: Stargate granite is quarried near Mont Darwin, Zimbabwe, it is a variant of Zimbabwe Black.
Synonyms: African Galaxy, Cosmos, Star Gate.
Gabbro: Any of several medium or coarse-grained intrusive igneous rocks that consist primarily of plagioclase feldspar and pyroxene. Essentially, gabbro is the intrusive (plutonic) equivalent of basalt, but whereas basalt is often remarkably homogeneous in mineralogy and composition, gabbros are exceedingly variable. Gabbros are found widely on the Earth and on the Moon as well.
Mineral Composition: Average by %
Density: 3,071 g/cm3
Compression Breaking Load: 226.2 Mpa
Elasticity Module: 72033 Mpa
Flexural Resistance: 22.8 Mpa
Water Absorption Rate: 0.11 % wt
Apparent Porosity: 0.34%
Hardness (Moh's Scale):
Note: These figures and details are given for guidance purposes only, no reliance should be taken as to their accuracy.