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Black Galaxy Granite : Our Own Quarry
Please note that these are average samples only. Due to Black Galaxy Granite being a natural material, rough block, slabs, tiles, and monuments are all liable to vary in colour and veining, therefore absolute resemblance cannot be guaranteed.
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Black Galaxy Granite
Learn more about the Original Star Galaxy Granite
Synonyms: Black Ametist, Black Ametista, Black Amethyst, Black Amethysta, Black and Gold, Black Galaxi, Black Galaxy Granite, Black Gold Sands, GA 902, Galaxi Black, Galaxy Black, Galaxy Gold, Galaxy Star, Nero Ametista, Nero Galassia, Nero Galaxy, Nero Star Galaxi, Nero Star Galaxy, Star Galaxi, Star Galaxy Black, Star Galaxy Granite, Star Gallaxy, WG203
Description: Black Galaxy Granite is a fine to medium-grained, black gabbro of the Precambrian period with golden-yellow sparkling broncite scales. Black Galaxy Granite internationally may be nominated as a granite however in the area of application of the European Standard this stone must be nominated as gabbro.
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.
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Black Galaxy Granite : Technical Specifications
| Description of Black Galaxy Granite |
This material has a dark black background with golden specks in it. There are two distinct types of Black Galaxy Granite: small/medium flake and large flake. First Choice material will have no white lines or veins. Lower cost Black Galaxy Granite may have black or white lines or clouds. |
| General Usage for Black Galaxy Granite |
It is mainly used for flooring, cladding, kitchen counters and table tops. Black Galaxy Granite looks best when it is glossy. Available in both slabs and tiles. |
| Quarrying Area for Black Galaxy Granite |
RL (Rajupalem-Lakshmi) Puram, Ramatheertham and Chimakurthi, Bodawada, Prakasam District, Andhra Pradesh, Southern India |
| Technical Specification |
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| Compressive Strength |
2777 Kg/cm2 |
| Comp. Strength after Gelivity |
2696 Kg/cm2 |
| Ultimate Tensile Strength |
274 Kg/cm2 |
| Coeff. Thermal expansion |
0.0045mm/mcº |
| Water Absorption |
0.04% |
| Impact Test-Min Fall Height |
68 cm |
| Specific Gravity |
2.960 Kg/m3 |
| Hardness (Moh's Scale) |
6.5 |
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Technical Specification (Abraxas Verlag) |
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| Bulk Density |
2,83 - 2,85 kg/dm³ |
| Bending Strength |
19,13 - 20,11 N/mm² |
| Compression Breaking Load |
200,1 - 203,1 N/mm² |
| Water Absorption |
0,08 - 0,12 vol.-% |
| Frost Resistant, Polish Constant |
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| Note |
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| These figures and details are given for guidance purposes only, no reliance should be taken as to their accuracy. |
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